发动机进气门开启
Engine intake valve open
以上为机器翻译结果,长、整句建议使用 人工翻译 。
在进气行程,活塞下行,进气门开启,产生真空使空气被吸进发动机。
On the intake stoke, the piston moves down and the intake valve is opened, a vacuum is produced and causes air to be drawn or pulled into the engine.
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