Power comes from racquet head speed.
击球的力量来自拍头的速度。
Sharapova's racquet is back a little higher than I was taught to take mine — my backswing was more compact — but it helps her produce greater racquet-head speed, which means more power.
莎拉波娃的球拍收回的时候比我做的高了一点- - -我的回拍更加紧凑- - -但是她的回拍使拍头速度更快，也就意味着力量更大。
In the process conditions permit, the change in pump flow, head, speed and medium operating temperature operating parameters, to avoid the occurrence of cavitation.
在工艺条件允许的情况下，改变泵的流量、扬程、转速及介质的操作温度等操作参数，可以避免汽蚀的发生。
In the process conditions permit, the change in pump flow, head, speed and medium operating temperature operating parameters, to avoid the occurrence of cavitation.
在工艺条件允许的情况下，改变泵的流量、扬程、转速及介质的操作温度等操作参数，可以避免汽蚀的发生。
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