downward force meaning in Chinese

下向力
向下力
向下压力

Figure 10-4 represents a fluid in a cylinder provided with a piston, on which is exerted a downward force .
图10-4表示一内贮液体的圆筒，圆筒上面配有密闭活塞，并有一向下的压力作用在该活塞上。
Test methods for downward force required to open or activate child - resistant snap - engagement packages
防止儿童开启的快速啮合包装品所需开启或使活动的拉力的试验方法
Test methods for measurement of vertical downward forces to disengage type iia lug - style child - resistant closures
防止儿童开启的可脱开的iia型突耳状闭锁器垂直力测定的试验方法
Figure 10 - 4 represents a fluid in a cylinder provided with a piston , on which is exerted a downward force
图10 - 4表示一内贮液体的圆筒，圆筒上面配有密闭活塞，并有一向下的压力作用在该活塞上。
A member , such as a beam , that projects beyond a fulcrum and is supported by a balancing member or a downward force behind the fulcrum
悬臂，支架伸在支点之外的一个构件，如一段横梁，由与其持平衡的或向下的在支点后面的一个力支撑