Once the racquet is back at eye level, the racquet can now fall, or loop down, to the low point of the backswing (one foot below the contact point) before swinging forward.

一旦网拍回到在眼睛高度，网拍现在能落下，或环状下来，在向前挥拍之前，拉到背后拉拍的低点接触点下面一？眨。

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Based on the level of customer contact between enterprises and customers, the service section has fallen into three categories: high-level, middle-level and low - level companies.

文章依据服务企业与顾客触程度的高低，把企业划分为高、中、低等三种接触类型。

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The contact voltage drop was low in the initial stage of wear, then rose to a certain level, finally became stable.

结果表明：在电磨损初期接触电压降较小，随着时间延长，接触电压降上升并趋于稳定；

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