A table-tennis rally/serve scoring tool: enter points won and lost in each phase to compute scoring rates, share of points and key-point performance.
分环节统计乒乓球得失分：相持得分率、发球得分率、总得分率、关键分得分率与得分来源占比。用于对比同一选手多场比赛或训练前后的技术结构变化。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Point rate | rate = points won / points played in that phase | Table tennis analysis practice |
| Service rotation | service alternates every two points and every point after ten-all | ITTF Handbook |
| Phase comparison | splitting service and rally phases locates the source of points | Table tennis analysis practice |
乒乓球（相持/发球）得分。体育竞技工具，帮助计算与分析运动数据。