1 、 With low-power machinery or vehicles the operator can usually apply sufficient force through a simple mechanical linkage from the pedle or handle to the stationary part of the brake、 In many cases, however, this force must be multiplied by using an elaborate braking system、(P5)用低能机器或传力工具,操作者通过向踏板或把手得一个简单机械连接构件作用足够得力量到车闸固定得部分。大多数情况,然而,用一个详细(复杂)得车闸系统使这个力量成倍增加。2、 The fundamental principle involved is the use of pressed air acting through a piston in a cylinder to set block brakes on the wheels、 The action is simultaneous on the wheels of all the cars in the train、 The pressed air is carried through a strong hose from car to car with couplings between cars; its release to all the separate block brake units, at the same time, is controlled by the engineer、 (Braking Systems)(P5) 相关得基本原理就是使用压缩气体,通过气缸内得活塞将闸块压在车轮起作用。列车得所有车厢上得车轮同时动作。压缩气体通过一个坚固得管道在由联轴器连接得车厢之间传输;工程师控制其在同一时间释放到所有独立得闸块单元。3、 When the brake pedal of an automobile is depressed, a force is applied to a piston in a master cylinder、 The piston forces hydraulic fluid through metal tubing into a cylinder in each wheel where the fluid’s pressure moves two pistons that press the brake shoes against the drum、 (Braking Systems)(P5) 当踩下汽车刹车得踏板,在主汽缸中得活塞上施加一个力。活塞驱动液压流体通过金属管道进入每个车轮气缸,在那里液压移动两个活塞将闸片压向轮圈。 4、 Machinery ontology including mechanical rack, mechanical connections and mechanical transmission, which is the basis of mechanical-electrical integration, plays a role in supporting the other functional units of the system and transmitting motion and power、 pared...
