发动机轴 meaning in English

engine shaft

As the piston descended, a ratchet engaged the piston rod and engine shaft and thus power was transmitted .
当活塞下行时，棘轮连接活塞杆和发动机轴，因此将功率输送出去。
At the same time , according to the reverse problem of impeller machinery design , focusing on the noise performance , the counter calculation software was developed to estimate the noise of cooling fan to provide the elementary verification of the design effect
同时，根据叶轮机械设计中的反问题的提法，针对发动机轴流冷却风扇的噪声性能，编制了反算程序，用于预测估计冷却风扇的噪声性能，从而为设计效果的验证提供初步依据。