It is also generally conceded that wankel engines are quieter than comparable piston engines . 转子发动机比通常的活塞式发动机噪音小也是大家所公认的。
Consider a container whose volume can be varied, such as a cylinder provided with a movable piston . 现在，我们考虑一体积可变的容器，例如一只具有可移动活塞的气缸。
The piston moves up and down in the piston chamber primarily in response to changes in intake manifold vacuum . 活塞主要因进气歧管真空度的变化而在活塞腔内上下移动。
As the piston descended, a ratchet engaged the piston rod and engine shaft and thus power was transmitted . 当活塞下行时，棘轮连接活塞杆和发动机轴，因此将功率输送出去。
A fresh charge of air-fuel mixture will be drawn into the cylinder as the piston moves down toward . 随着活塞朝下止点的向下运动，一些空气燃料混合气的新鲜充量将被吸入气缸。
When the driver depresses the pedal the fluid is forced out to each slave cylinder and operates their pistons . 当驾驶员将踏板踏下去时，液体被压出流向各辅助缸，推动各辅助缸的活塞。
Even if we put a catch in the cylinder to stop the piston at some point in its rise, we still can't calculate work . 既使我们把一个制动片放进气缸以阻止活塞在某点继续上升，也不能计算功。
Perry's slingshot device consisted of a fast moving hollow piston or capsule which contained the test section gas . 培里的弹射装置由一个快速运动的中空活塞或密封容器组成，其中包含试验用的气体。
Blowby is basically the leakage of compressed air-fuel mixture and burned gases past the piston rings into the crankase . 窜气，基本上是被压缩的空燃混合气和燃烧后的气体的泄漏，它通过活塞环进入曲轴箱。
Therefore, when the piston is pushed up in the cylinder, the air in the cylinder is trapped above the piston and compressed . 因此，当活塞在气缸里被推动向上时，气缸内的气体便被集聚在活塞上面并被压缩。
