一、杠杆原理:怎样握杆和用力挥杆,这是最基本的杠杆原理,但往往被忽视。这里研究的,不是如何省力或费力,而是研究如何稳定。只有挥杆稳定,才能打出好的效果。下面列出三种类型:1、用臂力挥杆,握杆的支点在肩部,握杆的手掌到肩的距离是动力臂,这个臂较长。2、用小手臂挥杆,支点 First, the lever principle: how to hold the lever and hard swing, which is the most basic lever principle, but often overlooked. What we are studying here is not how to make any effort or effort but to study how to stabilize it. Only swing stability, can play a good effect. Here are three types: 1, arm swing, grip the fulcrum in the shoulder, grip the palm-to-shoulder distance is the power arm, the arm longer. 2, swing with a small arm, fulcrum