Due to the different deoxidation methods, the ordinary low alloy steel has excellent performance, which requires that the material must be able to withstand the reciprocating force.

在冶炼时由于脱氧方法的不同，由于普通低台金钢具有优良的性能，这就要求材料必须经受得住往复力的作用。

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As one of the most stringent components in diesel engine, piston transfers the driving force during its high-speed reciprocating motion and withstands high mechanical load and thermal load.

活塞是柴油机工作条件最苛刻的部件之一，它在高速往复运动中传递着整个柴油机的原动力，承受着极高的机械负荷和热负荷。

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All of the aerodynamic force must be produced in the absence of any incident flow, meaning lift can only be produced by the powered reciprocating motion of the wing.

所有的空气动力都必须在缺乏任何迎流的情况下产生，意味着只可能通过翼的有动力作用的往复运动来产生提升。

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