文档介绍：several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurementallation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
实用文档
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
 
二、发球规则
1、发球时任何一方都不允许非法延误发球；
2、发球员和接发球员都必须站在斜对角发球区内发球和接发球，脚不能触及发球区的界线；两脚必须都有一部分与地面接触，不得移动，直至将球发出。
3、发球员的球拍必须先击中球托，与此同时整个球要低于发球员的腰部。
4、击球瞬间，球拍杆应指向下方，从而使整个拍头明显低于发球员的整个握拍手部。
5、发球开始后，发球员的球拍必须连续向前挥动，直至将球发出。
6、发出的球必须向上飞行过网，如果不受拦截，应落入接发球员的发球区内。
7、一旦双方运动员站好位置，发球员的球拍头第一次向前挥动即为发球开始。
8、发球员须在接发球员准备好后才能发球，如果接发球员已试图接发球则被认为已做好准备。
9、一旦发球开始，球被发球员的球拍触及或落地即为发球结束。
 
三、发球
1、发球员的分数为0或双数时，双方运动员均应在各自的右发球区发球或接发球。
2、发球员的分数