Flat engines are also called "opposed-cylinder" engines.
水平布置发动机也称“对置式”发动机。
2
The pumps are actuated by engine vibration. May also be used for 2-cycle engines. Not recommended for opposed multi-cylinder engines.
该泵安装到曲轴箱的前面或后面，该泵是由发动机振动驱动。也可使用2冲程发动机。不推荐使用多缸发动机。
3
Calculate and compare The Times taken to reach the bottom if the cylinder rolls without slipping as opposed to the case in which the cylinder slips all the way down the plane without rolling.