oil circulate system 油循环系统
But because it will be used only intermittently, at times the Volt's conventional engine will turn on merely to circulate oil and other fluids.
但因为只在间歇时启用，有时Volt的普通发动机仅仅在油路或其他液路循环是才会启动。
The oil that is splashed around will circulate metal debris to the lubricated bearing surfaces.
许多四处飞溅的机油会将金属屑带进轴承表面。
The oil pump continues to circulate the oil as long as the engine is running.
只要发动机在运转，机油泵会持续使机油循环。
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