简介：TheMinistryofEnergyhasworkedoutaplantolaunch60large-andmedium-sizedhydropowerprojectsbetween1991and2000,withatotaldesignedcapacityof70GW.Alsotheconstructionofsome8GWcapacityofsmallhydropowerstationswillstartduringthesameperiod.Fortheplannedlarge-andmedium-sizedprojects,prioritywillbegiventothoseontheupperandmiddlereachesoftheYellowRiver,themaincourseandtributariesoftheYangtzeRiver,theHongshuiRiverandtheLancangjiangRiver.

简介：Wake-upLight在距离你设定的时间还剩30分钟时，就会启动，模拟出黎明日出的效果，一点一点地驱走你卧室里的黑暗。有了它，你每天早上就不会再被刺耳的闹铃声吵醒．取而代之的是在温暖明媚的阳光中慢慢醒来。

简介：Ⅰ.ThesituationofgeographyandeconomyinCentralChinaregionTheCentralChinaregioncoversHenan,Hubei,HunanandJiangxifourprovinces.Itstotalareaamountsto730,000squarekilometerswithapopulationofabout238millionandpossessculti-vablelandof16.82millionhectares.Thisregionisoneoftheim-portantproductivebasesofgrains,cottonandedibleoil.

简介：例1：一只七彩虹128MB的U盘．插入电脑主机的USB口后，主机检测不到，U盘指示灯不亮。

简介：OnOctober27,theThreeGorgesengineeringgreetedanothermilestoneinitsconstruction.LiYongan,presidentofChinaThreeGorgesProjectCorporationdeclaredthatthegoalof136mreservoirimpoundmenthadbeenachieved,andtheThreeGorgesreservoirhadformallyenteredthestageofnormaloperationanddispatching.

简介：OnDecember25,2000,thelastgeneratingunitinTianshengqiaoIHydropowerStationcompleted72hoursoftrialoperationinparallelwithpowernetwork.UPtothisday,thegeneratingunitsinthisstationhadbeencompletelybuiltupandputintooperation.ThetotalinstalledcapacityofTianshengqia

简介：摘要换热器是炼油、化工行业生产中的重要设备，针对双管板U型换热器的设计实例，对设计过程中换热器结构、型式、选材、强度计算及检验进行介绍。

简介：OnOctober9,2001,thefuelingceremonyof2ndphaseprojectofQinshanNuclearPowerPlant,locatedinZhejiangHaiyangCounty,washeld.Thismarkedthattheconstructionofthefirstdomesticated600MWnuclearunitprojecthadbeencompleted,enteringthesubstantivestageoffuelingandtrialoper

简介：PrefaceOnOctober13,1958,inthecountytownofDeyanginsouthwesternChina,anewpowerequipmentmanufactureenterprise-DongfangElectricMachinerywasestablished,whichhadbeenplacedhigh

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简介：OnFebruary16,theceremonytocelebratethebuilding-upofMeizhouwanThermalPowerPlantwassolemnlyheldattheplantconstructionsiteinPutianCounty,FujianProvince.Thisplantisafirstwhollyforeign-fundedone,approvedbytheStateDevelopmentPlanningCommission.ThetotalinvestmentinM

简介：摘要分析了传统的弯曲模具成型产生擦伤原因，设计了一种新的滚轴式弯曲模具，介绍了模具的工作过程和设计要点。该模具主要以转动为主，与零件表面几乎无相对滑动，因此能达到很好的外观要求。

简介：OnOctober15,2001,No.7generatingunitofYunnanXuanweiPowerGenerationCorp.5thphaseprojectwassuccessfullyputintooperationandconnectedtothepowernetwork.Hitherto,XuanweiPowerPlant5thphaseextensionprojectwaswhollycompleted.XuanweiPowerPlant5thphaseextensionprojectis

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简介：Totheyear2020,Chinawillrealizethetargetofincreasingnon-fossilgenerationto15%ofthetotalenergyconsumption.Speedinguppowersourcesrestructuringcomesupasanarduoustaskduringthe12~(th)Five-YearPlanperiod.Inthisarticle,theauthoroutlinestheprinciplesofstructureadjustmentforvariouskindsofpowersources,andpointsouttheissuesneedingattentionduringtherestructuring.

简介：Promotionofthepowerindustryisanimportantpartofthestrategyofthenationalenergydevelopment.Powerisanimportantlinkinthechainofenergyindustry.ConsideringtherequirementsofsustainableenergydevelopmentinChina,toacceleratetheconstructionofanationalpowergridbasedonultra-highvoltagetrunksandcoordinatelydevelopedpowergridsatalllevelsmaysolvethevitalproblemsbeingfacedinenergydevelopmentItisalsosignificantforcreatingasystemofstable,economic,cleanandsafeenergysupply.

简介：1999年，朗科公司研发出了全球第一款USB闪存盘（U盘），成功启动了全球闪存盘行业。它的问世大大提高了办公效率，使人们生活更加便捷!它可以用于存储照片、资料和影像，虽然体积“娇小”，但储存量却不可小觑。实用性非常强!

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简介：摘要煤矿中的采空区需要好好管理，否则会造成煤矿塌陷等问题。在煤矿采煤的过程中会有一定量的瓦斯在通风采空区聚集，U型的通风采空区聚集的瓦斯会更多。这些瓦斯在会附着在岩石层上，当通风采空区的压力或者温度改变时，未经处理的瓦斯会造成爆炸，严重时会给煤矿带去很多的损失，研究通风采空区瓦斯治理技术是综合治理煤矿瓦斯的重要方向。

简介：摘要近年来锅炉U型管圈因水塞，在锅炉点火启动过程中短时过热爆管事件时有发生，给公司带来严重的经济损失，本文通过对锅炉U型管圈水塞形成的原因进行分析，提出预防防范及处理措施。