动力与传动装置：各种类型电动机、减速机，变速机、电梯主机，保护装置，电控系统等。
Power and Gearing device: Various kinds of motor, reducer, variable-speed motor, lift machine, protection device, and electronic control system etc.
由于地铁齿轮传动装置安装隐蔽、结构复杂、难于拆卸，故障类型多而复杂，加之测试条件的限制，故障诊断难度相当大。
Due to concealment installation, complicated structure, difficult to remove, complex fault and limit test conditions, the fault diagnosis of gear transmission is extremely difficult.
偏好的替代动力传动装置·替代燃料车的类型？有很大成长可能性的市场？
Which types of alternative powertrains and alternative fuel vehicles are preferred, and which have a higher growth potential in these markets?
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