乒乓球技巧讲解，横板勾手短侧下发球，借力很重要（上集）【乒乓球小宇老师】
4:14
The principle of serving the hook on the short side, it is very important to find the feeling
5:02
勾手短侧上发球讲解下集【乒乓球小宇老师】
5:35
Detailed explanation of table tennis teaching, straight backhand twist and pull teaching
3:50
陈康宁：勾手发球
12:02
勾手发球上下旋拆解 手腕内扣 拍角度 合力
6:48
How to Improve the Concealment of Serving
28:22
小韩老师教学勾手发球，学会了业余比赛无对手
4:41