在去年十二月份发布的的一份报告中，美国能源部估计电传动汽车和近海风力田的广泛使用，在2015年前可能导致这些金属元素的短缺。
In a report released last December, the U.S. Department of Energy estimated that widespread use of electric-drive vehicles and offshore wind farms could cause shortages of these metals by 2015.
在去年十二月份发布的的一份报告中，美国能源部估计电传动汽车和近海风力田的广泛使用，在2015年前可能导致这些金属元素的短缺。
In a report released last December, the U. S. Department of Energy estimated that widespread use of electric-drive vehicles and offshore wind farms could cause shortages of these metals by 2015.
电传动是电动汽车的关键技术之一，它由牵引电机、牵引变流器、控制系统三部分组成。
Electric drive, consists of traction motor, traction converter and control system, is one of the key technologies of electric vehicle.
电传动是电动汽车的关键技术之一，它由牵引电机、牵引变流器、控制系统三部分组成。
Electric drive, consists of traction motor, traction converter and control system, is one of the key technologies of electric vehicle.
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