求翻译：日常保养成本，电动汽车的电机相对内燃机而言结构较为简单，运转、传动部件少且工作条件较好，寿命期内除电池维保费用之外的维护成本应低于柴油车；而无轨电车的电机采用无刷直流电机，维护成本要高于交流电机。是什么意思？

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Daily maintenance costs, electric motors, motor relative internal combustion engine, structure is relatively simple to operate, power train components and work conditions are relatively good, and life of the Battery Pack Warranty costs of maintenance costs should be lower than those of diesel vehicl

The current maintenance cost, the electric automobile electrical machinery relative internal combustion engine says the structure to be simple, the revolution, the transmission part few also the working condition is good, in the average life should be lower than the diesel car except the battery Vyb

Ongoing maintenance costs, internal combustion engine, electric motor is relatively simple structure, small operation, transmission parts and good working conditions and lifetime maintenance costs other than the battery maintenance costs should be lower than diesel vehicles and trolleybus's motor br

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