我们可以通过击打母球中心的左右来获得侧旋。
This is achieved by striking left or right of the centre of the cue-ball.
很多选手没有多考虑他们的后摆，他们专心于击打母球。
Most players don't give much thought to their backswing. Their focus is primarily on hitting the ball.
例如左侧旋转，可以使母球吃库反弹回来的路线更偏左。
For example, with left side spin, the cue-ball will rebound off the cushion further to the left after hitting the object ball.
这是最普遍使用的旋转形式，通过击打母球的下半部分可以获得这样的旋转。
Striking the upper part of the cue ball causes it to travel further after impact with the object ball.
使用侧旋可以是出于很多种原因，但是最主要的一点就是改变母球离开目标球之后再吃库时的反射角度。
Side spin is used for a number of reasons, but its main job is to change the Angle the cue-ball bounces off the cushion after hitting the object ball.
在固液反应球磨过程中，三元合金产物的元素摩尔比接近于二元母合金中的元素摩尔比；
The atom ratio of the ternary alloy was close to that of the binary alloy.
该商标有时用小写母排印：“在掷镖游戏中用的带维可牢球的靶” （美国银行家）。
This trademark sometimes occurs in print in lowercase:"dart boards with velcro balls for darts" (American Banker).
利用接收信噪比矩母函数和误符号率之间的关系，并且对复球体的球帽表面积做近似处理得到误符号率的下边界。
Exploiting the relation between MGF of the received signal-to-noise ratio (SNR) and SER, the lower bound of SER is obtained by utilizing the approximation of complex cap surface in this dissertation.
利用接收信噪比矩母函数和误符号率之间的关系，并且对复球体的球帽表面积做近似处理得到误符号率的下边界。
Exploiting the relation between MGF of the received signal-to-noise ratio (SNR) and SER, the lower bound of SER is obtained by utilizing the approximation of complex cap surface in this dissertation.
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