Some racquets feature a trap door on the butt cap to allow easy removal of drill flash.
一些球拍有一个可以打开的手柄底盖，它可以容易的清除拍框内 侧残留的钻孔碎片。
As he gets ready to unleash on the ball, Djokovic points the butt cap of his racquet toward the other side of the net.
当他准备好击球，德约科维奇的拍柄指向球网的另一边。
Shock eraser insert: thermoplastic rubber core inside a thermoplastic elastomer butt cap is pressure fit into the shaft to reduce frame shock and vibration.
减震插片：拍柄内置热塑性橡胶内核同热塑性弹性体，有效减少球拍震动。
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