首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 46 毫秒
1.
虽然近年来旅游业得到了长足的发展,但旅游资源还没有得到充分发掘,旅游产业的带动作用还没有得到充分发挥。提升旅游资源的市场价值,提高景点、景区档次,打响品牌,增强旅游企业核心竞争力显得尤为迫切。以科学合理地整合旅游资源为思路,预期可产生调整旅游产品结构、调整旅游企业规模、整合旅游资源的品牌形象、促进再就业、维护社会政治稳定、带动贫困地区脱贫致富和经济社会协调发展等效益。旅游资源市场价值的提升可通过对市场品牌信息共享、基础设施和生态环境共建、建立战略联盟和旅游企业的集团化发展等几种模式实现。  相似文献   

2.
经济全球化不断加剧城市之间的竞争,城市的发展也越来越受到自身发展条件的限制.借鉴企业战略联盟的思想,建立城市战略联盟成为提升城市竞争力、互惠共利、协同发展的重要手段.从城市战略联盟的缘起入手,初步分析了城市战略联盟的概念、内涵、联盟的主要形式以及建立途径.城市战略联盟是城市政府之间为了充分发挥自身优势,弥补自身弱势的一种战略选择;是在保持城市自身行政权利独立性、平等自愿的基础上,共享城市的基础设施和发展条件,整合优势资源,城市之间互补协作的一种新的合作形式.  相似文献   

3.
沈山  沈正平  孙旭芳  马晓冬  安宇 《地理研究》2008,27(6):1444-1454
主题性旅游协作联盟是一种新型的旅游合作战略模式,其协作基础为相似的空间认知要素、现代化的信息技术支撑和物态化的整合营销品牌。在分析国内外20多个旅游协作联盟的基础上,从地域联系、主题类型、空间结构和组织形式等4个视角,总结了主题性旅游协作联盟的12种基本类型,指出协作的基础理论是注意力经济学、协作网络共生理论和旅游产业集群理论。选取江苏扬州至山东济宁段运河为研究区域,分析其文化资源和旅游发展状况,提出"千年运河,世纪风情"的运河文化主题,从组织体系、品牌营销、产品体系、保障机制、信息平台等5个方面进行主题性旅游协作联盟的构建。  相似文献   

4.
中国旅游产业发展中的政府职能定位分析   总被引:1,自引:1,他引:1  
由于市场经济存在着自身难以克服的缺陷,需要政府进行干预。因而在中国旅游业发展过程中实施政府主导型发展战略是必然的选择,政府对旅游业的干预极大地促进了中国旅游业的发展。但由于旅游相关信息的分散性,使得政府并不能掌握完全信息,政府本身的能力不一定完全符合旅游发展的需要,还有政府本身利益的影响等,都导致了政府在进行旅游行政管理时的局限性,使得其在职能实施时出现了“缺位”与“错位”的现象。唯一的解决办法是找准政府在旅游业发展中的定位,实行积极而有效的政府职能。  相似文献   

5.
滑雪度假旅游成为欧美山地旅游开发的主要形式。近十几年来,山地滑雪旅游在中国迅速发展,并成为东北一些地方旅游产品的主打品牌。本文从滑雪旅游开发布局影响因素研究出发,通过对中国滑雪旅游市场的需求与供给这对矛盾的全面分析,对照发达国家的滑雪旅游开展状况,总结出中国目前比较缺乏中高端的旅游滑雪场所。据此,作者提出内蒙古应以发展中高端滑雪旅游作为切入点,以阿尔山国际滑雪场为主,建立山地型滑雪网络和滑雪天堂的旅游形象。这些重要结论,对内蒙古发展冰雪旅游业、突破冬季无旅游、延长旅游季节性等方面有重要的指导意义。  相似文献   

6.
陈劼绮  陆林 《地理学报》2024,(4):1027-1044
乡村旅游是新时代落实乡村振兴战略和创新驱动发展战略,推动中国乡村经济社会实现高质量创新发展的重要产业载体和关键产业路径。乡村旅游业态的迭代发展,不仅重构了乡村经济社会形态,更重塑了乡村空间性质,新产业和新业态的不断涌现推动了乡村生产功能的转型,空间创新要素及资源配置突破地域限制反馈并赋能乡村旅游创新发展。本文在批判和继承熊彼特创新理论的基础上,解读乡村旅游创新的内涵与特征,构建“一个核心”与“五大支撑”的乡村旅游创新体系,展望未来中国乡村旅游创新研究的重点领域。结果表明:首先,乡村旅游经历了从无到有、逐步摸索、由弱变强的创新发展过程,具有时代性、融合性和地域性等特征。其次,在乡村旅游创新体系中,业态创新是乡村旅游创新的核心表征形式与物质空间载体,制度创新是顶层设计与逻辑起点,金融创新是坚实基础与动力支持,技术创新是重要引擎与突破力量,组织创新是关键支撑与有效保障,社会创新是现实路径与核心驱动。最后,分别从理论体系、实践样态、演化过程、动力机制和优化对策方面构建乡村旅游创新的研究框架。以期为理解、阐述和探索乡村旅游的发生、演替和创新发展提供重要的知识贡献和理论指引,也为中国情境下的乡村旅...  相似文献   

7.
<正>水是人类生存和发展的命脉,水利是人类文明程度的表征,中国自古以来就有"仁者乐山、智者乐水"之说,在旅游发展过程中,水的作用十分重要。水利旅游是指以水域或水利工程及相关联的岸地、岛屿、林草、建筑等自然景观和人文景观为主要吸引物的一种旅游形式  相似文献   

8.
鄂西与渝东旅游开发比较优势分析及区域整合对策   总被引:7,自引:1,他引:7  
鄂西与渝东在地缘和旅游开发上有着密切的关系,是一个跨省级行政区的特殊旅游区域,在旅游开发上很有必要进行比较优势分析和实施区域旅游一体化战略,以促进三峡区域旅游业的可持续发展。在探讨鄂西与渝东旅游开发关系和区域比较优势分析的基础上,提出了实施旅游区域整合战略的具体对策,即通过资源开发、旅游线路设计、旅游区划、交通与资讯建设、市场营销、极点对流辐射、组织机构设置、旅游发展规划等途径进行全方位的整合,这些有效措施的实施,将有力促进鄂西与渝东的区域旅游一体化建设和三峡地区旅游业的可持续发展。  相似文献   

9.
尹寿兵  郭强  刘云霞 《地理研究》2018,37(12):2503-2516
以世界文化遗产地宏村为例,借助企业成长理论,采用深度访谈和非参与观察等研究方法,探求遗产地旅游小企业成长路径及其驱动机制。宏村旅游小企业的创立、发展、退出是一个动态的过程。在企业家精神和市场需求双重因素作用下,社区居民利用民居开展经营,实现了身份转化和场所转变,创立了旅游小企业。发展过程中,受遗产保护限制和市场竞争压力,旅游小企业主群体分化,成长意愿不足的小企业主通过租售退出市场,推动新的小企业创立;具有成长意愿的旅游小企业通过模仿创新、代际传承、连锁扩张、抱团经营和品牌加盟等路径实现企业成长。研究发现,一体化、多元化、跟随、抱团等企业成长战略,以及家族企业的内部传承等共同构成了旅游小企业成长路径;同时,遗产保护、市场消费升级等旅游发展因素驱动了旅游小企业成长的循环更新。  相似文献   

10.
中国与周边国家国际旅游发展特征及其对比   总被引:1,自引:0,他引:1  
胡文海  朱晓华  蒋文燕 《地理研究》2007,26(6):1285-1294
基于地缘因素,根据国际旅游组织提供的权威资料,以中国为中心参照物,将中国与日本、韩国等18个邻国作为一个统一的旅游大市场,定量对比分析了19个国家国际旅游发展的基本特征。基于国家战略利益思考,揭示了中国在发展入境旅游方面所面临的机遇和挑战:中国入境旅游人数在19国中位居第一,年均所在国旅游花费在19国中位居第二,出境旅游人数位居第三,三者在总体上随时间均呈现出递增趋势,中国在各国中增长幅度最大;每平方公里国土面积上中国年均入境旅游人数、年均入境旅游花费远低于日本、韩国与泰国;中国入境旅游花费占GDP份额在各国中位居第八,总体上呈现出递减趋势;中国出境旅游人数位居第三,在他国旅游花费位居第二。进而指出日本、韩国、泰国已成为中国发展与开拓亚太(东盟、澜沧江-湄公河次区域)入境旅游市场所面临的三大主要竞争对手。最后,还探讨性地提出了当前以"惠邻"、"睦邻"、"安邻"为核心的我国参与周边区域国际旅游合作的国家战略选择模式,认为我国应将发展国际旅游作为与周边国家(区域)合作的重要桥梁与优先纽带,从国家战略利益的高度予以积极重视。  相似文献   

11.
BOOK REVIEWS     
Book Reviewed in this article: Development and Environment in Peninsular Malaysia . S. Robert Aiken, Colin H. Leigh, Thomas R. Leinbach, Michael R. Moss. The Rural-Urban Fringe: Canadian Perspectives . Ken B. Beesley and Lorne H. Russwurm, eds. Women and Development . Lourdes Benería, ed. The Border that Joins: Mexican Migrants and U.S. Responsibility . Peter G. Brown and Henry Shue, eds. Cities of the World: World Regional Urban Development . Stanley D. Brunn and Jack L. Williams, eds. Time Resources, Society, and Ecology: On the Capacity for Human Interaction in Space and Time (Vol. I, Preindustrial Societies). Tommy Carlstein. Urban Geography . David Clark. Spanish City Planning in North America . Dora P. Crouch, Daniel J. Garr, and Axel I. Mundigo. Not On Our Street: Community Attitudes to Mental Health Care . M. J. Dear and S. M. Taylor Unequal growth: Urban and Regional Employment Change in the U.K. Stephen Fothergill and Graham Gudgin. Agricultural Land in an Urban Society . Owen J. Furuseth and John T. Pierce. The Petroleum Industry in Oil-Importing Developing Countries . Fariborz Ghadar. Historical Understanding in Geography, An Idealist Approach . Leonard Guelke. Regional Planning in Europe . R. Hudson and J. R. Lewis, eds. Remote Sensing for Resource Management . Chris J. Johannsen and James L. Sanders, eds. Geography and The State . R. J. Johnston. Texas Graveyards: a Cultural Legacy . Tlrry G. Jordan. The Politics of Location: An Introduction . Andrew Kirby. A Social Geography of the City . David Ley. Energy and the Future . Douglas MacLean and Peter Brown, eds. The Natural Environment of Newfoundland Past and Present . A. G. Macpherson and J. B. Macpherson, eds. Tourism: Economic, Physical and Social Impacts . Alister Mathieson and Geoffrey Wall. Railroads and Land Grant Policy: A Study in Government Intervention . Lloyd J. Mercer. Progress in Rural Geography . Michael Pacione, ed. Progress in Urban Geography . Michael Pacione, ed. Models of Spatial Inequality: Settlement Patterns in Historical Archaeology . Robert Paynter. Natural Hazard Risk Assessment and Public Policy, Anticipating the Unexpected . William J. Petak and Arthur A. Atkisson. The Nature of Geomorphology . Alistair F. Pitty. Regional Conflict and National Policy . Kent A. Price Women and Spatial Change: Learning Resources for Social Science Courses . Arlene C. Rengert and Janice J. Monk, eds. Urban and Regional Analysis for Development Planning . Richard Rhoda. Rivers: Form and Process in Alluvial Channels . Keith Richards. This Remarkable Continent: An Atlas of United States and Canadian Society and Culture . John F. Rooney, Jr., Wilbur Zelinsky, and Dean R. Louder, gen. eds. The Origins of Open-Field Agriculture . Trevor Rowley, ed. Residential Location Determinants of the Older Population . Gundars Rudzitis. Borderland Sourcebook: A Guide to the Literature on Northern Mexico and the American Southwest . Ellwyn R. Stoddard, Richard L. Nostrand, and Jonathan P. West, eds. Arctic and Antarctic . David Sugden. Tall Timbers Ecology and Management Conference, February 22–24, 1979, Proceedings No. 16 . Graphic Communication and Design in Contemporary Cartography (Progress in Contemporary Cartography , Vol. II). D. R. Fraser Taylor, ed. Living with Energy Shortfall: A Future for American Towns and Cities . Jon Van Til. The United States: Habitation of Hope . J. Wreford Watson. Air Photo Interpretation for Archaeologists . D. R. Wilson. Urban and Rural Change in West Germany . Trevor Wild, ed. Population and Resources . Harry Robinson.  相似文献   

12.
BOOK REVIEWS     
Book Reviewed in this article: Geography and the Third World. International Seminar, 14–18 May 1980, Kuala Lumpur, Malaysia . Ishmail Ahmad and Jamaluddin Md Jahi, eds. The Growth Dilemma: Residents' Views and Local Population Change in the United States . Mark Baldassare. Sport and Place: A Geography of Sport in England, Scotland & Wales . John Bale. The Deindustrialization of America: Plant Closings, Community Abandonment, and the Dismantling of Basic Industry . Barry Bluestone and Bennett Harrison. Selected Essays 1963–1975: Carl O. Sauer . Bob Callahen, ed. Housing and Planning in the Countryside . G. Clark. Conflict, Politics and the Urban Scene . Kevin R. Cox and R. J. Johnston, eds. Thematic Maps: Their Design and Production . David J. Cuff and Mark T. Mattson. Wine: A Geographic Appreciation . Harm Jan de Blij. USSR in Maps . J. C. Dewdney. Political Geography: A Contemporary Perspective . Ramesh D. Dikshit. Rethinking Human Adaptation . Rada Dyson-Hudson and Michael A. Little, eds. Sacred Sands: The Struggle for Community in the indiana Dunes . J. Ronald Engel. Geography of the Biosphere . A. Furley and Walter W. Newey. Disaster and Reconstruction . Robert Geipel. Glasgow: The Making of a City . Andrew Gibb. Design for Arid Regions . Giden S. Golany, ed. Urbanization and Cancer Mortality: The United States Experience, 1950–1975 . Michael R. Greenberg. Geology in the Nineteenth Century: Changing Views of a Changing World . Mott T. Greene. Colonización y Destrucción de Bosques en Panamá . Stanley Heckadon Moreno and Alberto McKay, eds. Urban Geography: A First Approach . David T. Herbert and Colin J. Thomas. The Visual and Spatial Structure of Landscapes . Tadahiko Higuchi. Climate from Tree Rings . M. K. Hughes, P. M. Kelly, J. R. Pilcher, and V. C. LaMarche, Jr., eds. The structure of Nineteenth Century Cities . James H. Johnson and Colin G. Pooley, eds. The American Planner: Biographies and Recollections . Donald A. Krueckeberg, ed. Urban Land Policy For the 1980s, the Message for State and Local Government . George Lefcoe, ed. Regional Planning: Evolution, Crisis and Prospects . Gill C. Lim, ed. Relevance and Ethics In Geography . Bruce Mitchell and Dianne Draper. China: The Geography of Development and Modernization . Clifton W. Pannell and Laurence J. C. MA. The Urban Retailing System . Robert B. Potter. Hants. Nonconventional Energy Resources . Philip R. Pryde. Caribbean Migrants: Environment and Human Survival on St. Kitts and Nevis . Bonham C. Richardson. Population and Resources . Harry Robinson. East Los Angeles: History of A Barrio . Ricardo Romo. Integrated Impact Assessment . Frederick A. Rossini and Alan L. Porter, eds. Environmental Aesthetics: Essays in Interpretation . Barry Sadler and Allen Carlson, eds. Earthwatch . Charles Sheffield. Field Techniques and Research Methods in Geography . Robert H. Stoddard. Haiti: Land of Poverty . Robert J. Tata. Weathering and Erosion: Sources and Methods in Geography . Stephen T. Trudgill. Once Beneath the Forest. Prehistoric Terracing in the Río Bec Region of the Maya Lowlands . B. L. Turner, II. The Historical Geography of Scotland since 1707 . David Turnock.  相似文献   

13.

Reviews of geographic software in this article:

DEMO-GRAPHICS: WORLD POPULATIONS AND PROJECTIONS.

ESP

GAUSS.

CEMODEL S. Damus

LIMDEP. William H. Greene

MICROSTAT 4.1

OTIS

PCIPS. (Personal Computer Image Processing System). H.J. Meyers and R. Bernstein.

REGRESSION ANALYSIS OF TIME SERIES (RATS)

SPSS/PC+

URBAN DATA MANAGEMENT SOFTWARE (UDMS)  相似文献   

14.
BOOK REVIEWS     
Book Reviewed in this article: Rabat: Urban Apartheid in Morocco . Janet Abu -Lughod . Marketplaces in a Developing Country: The Case of Western Nigeria . Isaac Ayinde Adalemo . Farming Development and Space: A World Agricultural Geography . Bernd Andreae . Section and Party: A Political Geography of American Presidential Elections, from Andrew Jackson to Ronald Reagan . J. Clark Archer and Peter J. Taylor . Women and Space: Ground Rules and Social Maps . Shirley Ardener , ed. European Progress in Spatial Analysis . R. J. Bennett , ed. The Origins of Academic Geography in the United States . Brian W. Blouet Geographic Perspectives on Global Problems . Ronald Reed Boyce . Seasonal Dimensions to Rural Poverty . Robert Chambers , Richard Longhurst and Arnold Pacey eds. The New Nationalism and the Use of Common Spaces: Issues in Marine Pollution and the Exploitation of Antarctica . Jonathan I. Charney , ed. Communications Tomorrow: The Coming of the Information Society . Edward Cornish , ed. The Design of Suburbia . Arthur Edwards . Explorer on the Northern Plains: Lieutenant Gouverneur K. Warren's Preliminary Report of Explorations in Nebraska and Dakota in the Years 1855–56–57. With an Introduction by Frank N. Schubert . The Changing Climate: Responses of the Natural Flora and Fauna . Michael J. Ford . Essentials of Physical Geography . Robert E. Gabler , Robert J. Sager , Sheila Brazier , and Daniel L. Wise. The Road to Jaramillo . William Glen . Valued Environments . John R. Gold and Jacquelin Burgess , eds. Proximity and Preference: Problems in the Multidimensional Analysis of Large Data Sets . Reginald G. Golledge and John N. Rayner , eds. A Search for Common Ground . Peter Gould and Gunnar Olsson , eds. Geography: Its History and Concepts . Arild Holt -Jensen . A Population Geography . Huw R. Jones . The Human Mosaic: A Thematic Introduction to Cultural Geography, 3rd ed. Terry G. Jordan and Lester Rowntree . Urban Social Geography: An Introduction . Paul Knox . The Anatomy of Job Loss: The How, Why and Where of Employment Decline . Doreen Massey and Richard Meegan . The Information Society as Post-Industial Society . Yoneji Masuda . Map Librarianship, 2nd ed. Harold Nichols . India: Cultural Patterns and Processes . Allen G. Noble and Ashok K. Dutt , eds. The God that Limps: Science and Technology in the Eighties . Colin Norman . Geography: An Introductory Perspective . Robert E. Norris , Keith D. Harries and John D. Vitek . The Politics of Technology Assessment . David M. O'Brien and Donald A. Marchand . Ethnic Segregation in Cities . Ceri Peach , Vaughan Robinson and Susan Smith , eds. Churches and Church Membership in the United States, 1980 . Bernard Quinn , Herman Anderson , Martin Bradley , Paul Goetting and Peggy Shriver . Energy in Australia: Politics and Economics . Hugh Saddler . Development from Above or Below? The Dialectics of Regional Planning in Developing Countries . Walter B. Stóuhr and D. R. Fraser Taylor , eds. Human Impact on the Ecosystem . Joy Tivy and Greg O'Hare . Plants and People: Vegetation Change in North America . Thomas R. Vale . The Mapmakers: The Story of the Great Pioneers in Cartography from Antiquity to the Space Age . John Noble Wilford .  相似文献   

15.
Desertification is a global phenomenon that affects about two billion people. It occurs in arid zones where the annual precipitation is below 400 mm, partic- ularly in the marginal areas of the world's largest deserts. It is a result of water and wind erosion, over- grazing, global warm-ing, improper soil cultivation, and increased pressure ot population growth, and it causes degradation of soil and natural and agricultural vegetation. The direct result is less food for people and livestock, which influences pop- ulation and animal husbandry fluctuations. Despite ef- forts to combat and reduce desertification, the affected areas are annually increasing.  相似文献   

16.
BOOK REVIEWS     
Book Reviewed in this article: The Rice Economy of Asia . Randolph Barker and Robert W. Herdt with Beth Rose. Using Microcomputers: A Guidebook for Writers, Teachers, and Researchers in the Social Sciences . Blaine A. Erie—the Lake that Survived . Noel M. Burns. Geology and Society . Donald R. Coates. Caves and Karst of Kentucky . Percy H. Dougherty, ed. Altered Harvest: Agriculture, Genetics, and the Fate of the World's Food Supply . Jack Doyle. The Middle East and North Africa, A Political Geography . Alasdair Drysdale and Gerald H. Blake. Clamor at the Gates. The New American Immigration . Nathan Glazer, ed. Development and the Landowner: An analysis of the British experience . Robin Goodchild and Richard Munton. Discovering Landscape in England and Wales . Andrew Goudie and Rita Gardner. The Modern Plantation in the Third World . Edgar Graham and Ingrid Floering. Social Relations and Spatial Structures . Derek Gregory and John Urry, eds. The World Food Problem 1950–1980 . David Grigg. Costa Rica: A Geographical Interpretation in Historical Perspective . Carolyn Hall. The Urbanization of Capital: Studies in the History and Theory of Capitalist Urbanization . David Harvey Consciousness and the Urban Experience: Studies in the History and Theory of Capitalist Urbanization . David Harvey. Reviving Main Street . Deryck Holdsworth, ed. Rural Roads and Poverty Alleviation . John Howe and Peter Richards, eds. Uneven Development in Southern Europe: Studies of Accumulation, Class, Migration and the State . Ray Hudson and Jim Lewis, eds. Karst Geomorphology . J. N. Jennings. The Geomorphology of North-west England . R. H. Johnson, ed. Climate Impact Assessment: Studies of the Interaction of Climate and Society . Robert Kates, Jesse Ausubel, Mimi Berberian, eds. Public Service Provision and Urban Development . Andrew Kirby, Paul Knox, and Steven Pinch, ed. State and Market: The Politics of the Public and the Private . Jan-Erik Lane, ed. Living Cities . Twentieth Century Fund Task Force on Urban Preservation Policies. World Climatic Systems . John G. Lockwood. Urban Ethnicity in the United States. New Immigrants and Old Minorities . Lionel Maldonaldo and Joan Moore, eds. Culture and Conservation: The Human Dimension in Environmental Planning . Jeffrey A. McNeely and David Pitt, eds. The Andean Past. Land, Societies, and Conflicts . Magnus Mörner. Gaia: An Atlas of Planet Management . Norman Myers, ed. Progress in Industrial Geography . Michael Pacione, ed. Progress in Political Geography . Michael Pacione, ed. Rivers and Landscape . Geoff Petts and Ian Foster. Urbanization and Planning in the 3rd World: Spatial Perceptions and Public Participation . Robert B. Potter. One Island, Two Nations? A Political Geographical Analysis of the National Conflict in Ireland . D. G. Pringle. Circulation in Third World Countries . R. Mansell Prothero and Murray Chapman. The Ozarks Outdoors: A Guide for Fishermen, Hunters, and Tourists . Milton D. Rafferty. Suburban Burglary: A Time and a Place for Everything . George Rengert and John Wasilchick. Geomorphology and Soils . K.S. Richards, R.R. Arnett, and S. Ellis, eds. The Homes and Homeless of Post-War Britain . Frederick Shaw. Indochinese Refugees in America . Paul J. Strand and Woodrow Jones, Jr. Wild Horses and Sacred Cows . Richard Symanski. Forever Wild: Environmental Aesthetics and the Adirondack Forest Preserve . Philip G. Terrie. The Regional Economic Impact of Technological Change . A.T. Thwaites and R.P. Oakey, eds. The Good Life . Yi-Fu Tuan.  相似文献   

17.
Reviews of geographic software in this article: DEMO-GRAPHICS: WORLD POPULATIONS AND PROJECTIONS. ESP GAUSS. CEMODEL S. Damus LIMDEP. William H. Greene MICROSTAT 4.1 OTIS PCIPS. (Personal Computer Image Processing System) . H.J. Meyers and R. Bernstein. REGRESSION ANALYSIS OF TIME SERIES (RATS) SPSS/PC+ URBAN DATA MANAGEMENT SOFTWARE (UDMS)  相似文献   

18.
19.
《寒旱区科学》2014,(4):I0002-I0003
1. Aims and scope
Sciences in Cold and Arid Regions (SCAR) is a bimonthly journal that publishes in English the latest research achievements in processes and the pattems of the Earth surface system in cold and arid regions. Researches in cold regions emphasize particularly on the cold-region-characterized physical,  相似文献   

20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号