In this paper, the assistant power system of hybrid electrical vehicle (HEV) was an engine with small displacement, which could charge the battery and directly drive the air-conditioning system.
研究开发了混合动力电动车(HEV)中的辅助动力系统，采用一台小排量的发动机组成发电机组，既可以给电池组充电，发动机也可以直接驱动空调系统。
The systems comprise two engine-driven, electrically controlled, variable displacement hydraulic pumps and four large and four small hydraulically controlled, variable displacement hydraulic motors.
两个发动机驱动的电控液压泵（排量可变），四个大型和四个小型的液压控制马达（排量可变）。
The systems comprise two engine-driven, electrically controlled, variable displacement hydraulic pumps and four large and four small hydraulically controlled, variable displacement hydraulic motors.
两个发动机驱动的电控液压泵（排量可变），四个大型和四个小型的液压控制马达（排量可变）。
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