的向下运动，一些空气燃料混合气的新鲜充量将被吸入气缸。

A fresh charge of air-fuel mixture will be drawn into the cylinder as the piston moves down toward.

youdao

空气和燃料，是由各该活塞向下运动，活塞然后移动起来，这是挤出，然后点燃混合气进入气缸。

Air and fuel are drawn into the cylinder by the downward movement of the piston, the piston then moves up and squeezes this mixture which is then ignited.

youdao

空气和燃料，是由各该活塞向下运动，活塞然后移动起来，这是挤出，然后点燃混合气进入气缸。

Air and fuel are drawn into the cylinder by the downward movement of the piston, the piston then moves up and squeezes this mixture which is then ignited.

youdao