Power comes from racquet head speed.
击球的力量来自拍头的速度。
Frequency power head, adjusting speed arbitrary, wide speed range.
变频动力头，转速任意调节，作用范围广。
变速铣头。
The top-head has large torque, wide range of speed, big pull force.
动力方扭矩大、转速范围广，起拔力大。
The top-head has large torque, wide range of speed, big pull force.
动力方扭矩大、转速范围广，起拔力大。
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