up & down stroke 弹片上下动作
up-down stroke 上下冲程
up-down stroke of oil pump 油泵的上
Up-down Stroke Velocity 上下冲程速度
Down Up Stroke 挥动打击法
Up for the down stroke 击倒后起来 ; 唱片名
The piston travels down on the intake stroke, up on the compression stroke, down on the power stroke and up on the exhaust stroke.
进气行程,活塞下行;压缩行程,活塞上行;做功行程,活塞下行;排气行程,活塞上行。
Both the down stroke and the up stroke are highlighted in different colors.
无论是向上和向下中风中风是突出了不同的颜色。
With the down stroke of a wing during flight, the body moves up, but the subsequent upstroke can counter that force.
用飞行翼的上下行程,身体向上移动,但随后的冲程可以对抗这种力量。
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