简介:IntroductionBeingofgreatvaluetorailwaytransportandhencetonationaleconomy,electrificationofrailwayshasbeencarriedoutveryrapidlyinChinainthepast30years.Bytheendof1990,some6941kmofelectrifiedrailwayshavebeenopenedtotrafficandabout16,000kmoronefourthofthetotalrailwaylengthareexpectedtobeelectrified,accountingfor45%ofthetotalrailwayfreightvolume.Atpresent,ShaanxiProvinceranksfirstwithrespecttototal