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991.
HainanprovinceintypicaloceanatmosphereissituatedinthesouthofChina .Itsaverageannualtemperatureisabout 2 5℃ ,andannualmeanrela tivehumidityismorethan 85 %[1] .Atmosphericcorrosionofmaterialsisseriousinthisarea .Itwasreportedabroadthatthesurveysofatmosphericcor r… 相似文献
992.
Space-Time Coded Beamforming for DS CDMA Downlink 总被引:2,自引:0,他引:2
WANG Shi-lu XU Chang-jiang FENG Guang-zengNanjing University of Posts Telecommunications Nanjing P.R.China 《中国邮电高校学报(英文版)》2005,12(1)
1 Introduction In 3G mobile system, Code Division Multiple Access(CDMA) is a promising multiple access techniques. It iswell know that BeamFormin ( BF), Space Time Coding(STC) and Multiuser Detection(MUD) techniques in CDMAsystem can effectively resist Multi Path Interference (MPI),MAI and near far effects. So the system capacity will be im proved greatly by employing these techniques[1,2,8]. In Ref.[3] introduces Water Filling(WF) theory into STC to assignth… 相似文献
993.
994.
Generation dispatching in sequence of the energy-consumption level of generating units is of utmost importance for energy-consumption reduction of the power industry of momentous significance for the restructuring of electric power industry.…… 《电气》2007,18(1):21-23,27
Generation dispatching in sequence of the energy-consumption level of generating units is of utmost importance for energy-consumption reduction of the power industry and of momentous significance for the restructuring of electric power industry. 相似文献
995.
Wang Ling-ling College of Water Conservancy Hydropower Engineering Hohai University Nanjing China 《水动力学研究与进展(B辑)》2002,14(2)
1 . INTRODUCTIONThefollowingequationiswidelyusedingroundwaterdynamics,electricityandmedicalscience: x kx(x ,y) H x y ky(x ,y) H y =f(x ,y, 相似文献
996.
RadioimmunoasayofpepsinogensIandIinhumanserumXiaoZhiJian,JiangMengJunandHuangXuQuan(JiangsuInstituteofNuclearMedicine,Sta... 相似文献
997.
Sun Fengchun Chen Yong Zhang Chengning Sun Liqing School of Vehicle Transportation Engineering Beijing Institute of Technology Beijing China 《机械工程学报(英文版)》2002,15(1):57-61
0 INTRODUCTION*Human being has waked up to come to face with more and more serious environmental pollution and energy crisis,decrease of emission and fuel consumption of automobile have been paid special attention. Electric vehicles have become focus because they have the advantages of vehicles using internal combustion engines in terms of zero emission,usage of alternative energy source and lower noise. More and more countries including China convoked their researchers and invested cap… 相似文献
998.
On October the second session of the th council of Foundry Institution of Chinese Mechanical Engineering Society 《中国铸造》2007,4(4):342-343
On October 21,the second session of the 8th council of Foundry Institution of Chinese Mechanical Engineering Society (FICMES) together with the 22nd secretary-general session was held. 相似文献
999.
Scope This standard specifies the classification specification test method quality appraisal procedure labeling packing transportation storage quality certification of silica brick for coke oven.…… 《中国耐火材料》2007,16(2):35-38
This standard specifies the classification,specification, test method, quality appraisal procedure,labeling, packing, transportation, storage and quality certification of silica brick for coke oven. 相似文献
1000.
China National Petroleum Corporation 《中国油气》2007,14(1):58-61
China National Petroleum Corporation (CNPC) is taking on the world with great success. The nation's top oil producer began energy-exploration projects for the first time in a number of countries last year, such as Equatorial Guinea, Uzbekistan and Argentina. This brings the total number of overseas countries where CNPC has a total of 66 projects in operation to 26, forming five major operational regions including Africa, Central Asia, South America, the Middle East and Asia Pacific. With the overseas oil and gas business brought under rapid development, the newly additional recoverable reserves of the company worldwide reached 65.40 million tons. 相似文献