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由西门子公司开发的一种110kW无齿轮牵引发动机正在Wegberg-Wildenrath的测试工厂进行试验,这里以前是为慕尼黑U-Bahn(地铁)车辆配套的。西门子宣称开发了一种效率达到96%的永磁体
A 110kW gearless traction engine developed by Siemens is being tested at the Wegberg-Wildenrath test facility formerly used for the Munich U-Bahn (metro) vehicle. Siemens claims to have developed a permanent magnet with 96% efficiency