reverse acting meaning in English

反动作

Reverse acting reducing valve
反向作用式减压阀
Diaphragm actuators available are : double acting ( air pressure required open or close ) , direct acting ( air pressure required to close , mechanical spring to open ) or reverse acting ( mechanical spring to close , air pressure required to open )
隔膜执行机构适用于：双动(气压开启或关闭) ，直接作用(气压关闭，机械弹簧开启)或反向作用(机械弹簧关闭，气压开启) 。
In cross calculation , the structure subject to cross force and the reverse force of elasticity support can be derived from the bottom elasticity support on each longitudinal beam ; then , with the elasticity reverse force as the loading reversed acting on the side walls and the middle longitudinal beam , the longitudinal beam subject to force can be calculated
横向计算中，底部弹性支承在各纵梁上，可求得结构的横向受力与弹性支承反力；然后将弹性反力作为荷载，反向作用于侧墙和中间纵梁上，进行纵向梁的受力计算。