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3.非直线球非直线球就是主球中心点A′、目标球中心点B和球袋中心E三者不在一条直线上。主球斜对着ABE这条直线,形成一个偏斜角A角。因此,练习非直线球非常重要,在比赛中直线球很少,非直线球最多,打非直线球主要是练习测角和瞄准(前面已经谈过测距瞄准法和测距器的用法)。击球前,用测距瞄准器按图①,将目标球位和主球球位,根据要求的30°角,用粉笔点在台面上,进行瞄准击球,瞄准点C的位置恰好与目标球边缘相切,所以瞄准比较
3. Non-linear ball Non-linear ball is the main ball center A ’, the center of the ball B and the center of the bag E are not in a straight line. The main ball oblique to the ABE this straight line, forming a skew angle A angle. Therefore, the practice of non-linear ball is very important, very few straight balls in the game, the largest number of non-linear, playing non-linear ball is mainly practice angle measurement and aiming (previously talked about rangefinder and range finder usage). Hit the ball with the sight of the sight according to Figure ①, the target ball position and the main ball bit, according to the required angle of 30 °, the point with a chalk point on the table, aiming shot, aiming point C position exactly with the target Tangential to the edge of the ball, so aim at comparison