共查询到10条相似文献,搜索用时 15 毫秒
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A comparative study on the ionospheric current systems in the Antarctic and Arctic regions 总被引:1,自引:0,他引:1 下载免费PDF全文
AcomparativestudyontheionosphericcurrentsystemsintheAntarcticandArcticregionsXuWenyao(徐文耀)(InstituteofGeophysics,AcademiaSini... 相似文献
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I.TheProcessofAdministrativeDivisionSystemChanges(ADSC)Therelationshipbetweenthechangesinadministrativedivisionsystemandurbanizationprocessmain1ydisplaysinthemutualtransferringbetweenurbanandruralareas.Thiskindoftransferringisduetotheadjustmentoftheadm… 相似文献
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Study of the MSA, nssSO 2- 4 concentration and MSA to nssSO 2- 4 ratio in the
snow/ice and atmospheric aerosols of the regions surrounding the Weddell Sea 下载免费PDF全文
1IntroductionItisnowwelrecognizedthattheoceanicbiogenicsulphurcycleplaysanimportantroleintheforcingofglobalclimate.Dimethylsu... 相似文献
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Chen Changchun Geography Dept. Xiangtan Teachers'' College Hunan People''s Republic of China 《地理学报(英文版)》1997,(1)
I.IntroductionThepolarizationdevelopmentoftheregionalspacialsystemofinternationaleconomiccooperationcanbeinterpretedastheevolvingtendencyoftheessentialproductivefactormixinacertaintransnationaleconomicorganizationwhichconvergeanddiffuseinspacebywayof… 相似文献
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《地理学报(英文版)》1997,(1)
SlopelandameliorationandutilizationwithcomplexagroforestrysystemraisedbyProfessorHuangBingweiwasmainlyaimedatimprovingslopelandsustainableproductivitybyusingbiologicalmeasuresforthepurposeofprovidingnewmethodforfuturecomprehensiveexploitationandutili… 相似文献
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Zhang Jie Li Shengfeng Zhou Yinkang Du Jinkang Department of Geography Nanjing University Nanjing People''s Republic of China 《地理学报(英文版)》1997,(3)
1.IntroductionResearchonbiokarststretchfromnineteenthcentury,yetonlyrecently,moreefficientandsystematicresearchhasbeenputforwardwiththeappearanceofrelatedspecialterminologyanddetailedreviews[3,11,30,3638],anditseemsthatthereisstilllackofbiokarstinalpineenviro… 相似文献