执拍手 meaning in English

racket hand
recket hand

The racket hand is the hand carrying the racket
执握球拍的手称为“执拍手” 。
The free arm is the arm of the free hand
非执拍手臂，是指非执拍手的手臂。
The free arm is the arm of the free hand
未执握球拍的手称为“非执拍手”
The ball is in play from the last moment at which it is stationary on the palm of the free hand before being intentionally projected in service until the rally is decided as a let or a point
从发球时，球在非执拍手手掌心上静止状态向上抛起的最后瞬间，至该回合被判定为重发球或得分为止，称为“比赛中” 。
The server shall then project the ball near vertically upwards , without imparting spin , so that it rises at least 16cm after leaving the palm of the free hand and then falls without touching anything before being struck
发球员须用手将球几乎垂直地向上抛起，不得使球旋转，并使球在离开不执拍手的手掌之后上升不少于16公分，球下降到被击出前不能碰到任何物体。