求翻译：定杆 　　控制力量利用中低杆打法击球，使母球碰撞后定住。低杆产生回旋从而抵消远距离高杆效果。 　　距离越远，力量越大，击球点越低；只能打直线球。是什么意思？

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There will be using the power of control over par shot the ball low, so that the ball after a collision will fix. Have a swing to offset low par long-distance high-under-par results. The greater power, the greater the distance, the batter; only the lower point hit a straight ball.

Decides the pole 　　In the control strength use the low pole fighting method hits a ball, after causes the female ball collision the anchorage.Thus the low pole has the maneuver the counterbalance long-distance range high pole effect. 　　From farther, the strength is bigger, hits a ball the spot to be

Control forces hitting the low bar in play, after the cue ball collision. 　　Low swing so as to offset the effect of long-distance high pole. The farther, more powerful, batting lower; just straight.

Make pole control strength low pole play bat, make mother ball live in definitely after collision utilize. The low pole is produced and circled round to offset the remote high pole effect. The farther the distance is, the larger the strength is, the lower the striking point on the ball is; Can only