A threefold cord is not quickly broken.
三股拧成不易断。
A threefold cord is not quickly broken.
三股拧成不易断。
The purpose of the bulkhead is threefold: to seal the forward end of the motor, to retain the pyrogen igniter, and to act as a blowout plug in case of motor overpressurization (discussed earlier).
目,舱壁是三个方:着年底汽车,保留热原点火器,并充当井喷堵塞在案件电机overpressurization (讨论以较早者为准) 。
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