change direction of the ball的意思|示意

If there is an abrupt change of direction in their energy, from vertical to horizontal, such as when they accelerate across the court, bouncing the ball, there is a real danger of personal injury.

如果有垂直于地平线的力量突然改变方向，例如当他们快速地穿过球场，跳起来拿球，这对个人的伤害是很严重的。

The tail reacts to that change of direction in the primary force (the ball moving), yet it is delayed due to the resistance of momentum.

尾部对主要力（球体运动）的方向变化产生反作用，只是这种作用由于动力的影响而受到了延迟。

It is an overhead pass used to change the direction of the dig and put the ball in a good position for the spiker.

这是一种过顶传球，用于改变垫球的方向，并将球调整到一个方便扣球手的有利位置。

Stainless steel pneumatic flange ball valve in the pipeline is mainly used to do the cutting speed, distribution and change the direction of the flow of media.

不锈钢气动法兰球阀在管路中主要用来做切断速度快，分配和改变介质的流动方向。

Ball valve used to be cut off in the main line, distribution and change the direction of the flow medium.

球阀在管路中主要用来做切断、分配和改变介质的流动方向。