The dischargingsteam provided the rocket with motive power.
蒸汽排放所产生的反作用力给火箭提供了动力。
2
When the system pressure drops to the return pressure, the security valve will be closed and stop discharging, in the way of which the pipelines and equipments of the steam system will be protected.
The main safety valve shall be fastened upon the gallow, . Which sustains the counterforce produced in the steamdischarging process of the main safety valve .