简介:IntroductionTungsten-copperalloypowdersareusedinmanyfieldsonaccountofthehighelectricandthermalconductivitiesofcopperandhighmeltingpointoftungsten.W-Cupowders,aspreparedconventionallybymeansofinfiltration,hasthedisadvantageofinhomogeneityinmicrostructure,andaredifficulttoworkwithaftersintering.
简介:AmissionofHongKongChinaLight&PowerCo.headedbySirWilliamsStones,ManagingDirectorpaidavisittotheMinistryofEnergylastOctoberandwasreceivedbyMr.HuangYicheng,MinisterofEnergy.Duringthemeeting,issuesofcooperativeprojectsbothunderwayandinfuturewerediscussed.Bothsidesagreedthatbetterunder-standingandcooperationoverDayaBayNuclearPowerStationshallcontinuetobemaintainedinordertospeedupandsmoothenitsprogressandtowellprepareforitsfuturecom-
简介:Inthispaper,wegetW1,p(Rn)-boundednessfortangentialmaximalfunc-tionandnontangentialmaximalfunction,whichimprovesJ.Kinnunen,P.LindqvistandTananka’sresults.
简介:图①:2001年2月24日下午4时,河南省光山县公安局经侦大队接到举报:两天内将有人从广东贩运回大量假币到潢川县交货,运输车辆为蓝色解放牌小货车,车号为豫S—30××4。县公安局局长朱家明立即召集经侦大队几位副大队长研究制订堵截行动方案。图②:经过一天一夜的盘查,到25日下午6时10分,正当守候民警心急如焚之时,一辆蓝色小货车驶进站台,侦查员谢言武一眼认出:“是解放牌,车号为豫S-30154。”车刚停稳,两名侦查员同时跃入车道,示意检查。此时小货车却突然加大油门,直冲过来,白色桑塔纳警车迅速从侧面驶出,死死地挡住了货车的去路,副队长魏明、熊锐斌飞身登上驾驶室。“不许