操纵杆越长就越容易抬起重荷，而如果你的操纵杆真的过短，那你将在力学上处于劣势。

The longer those handles are, the easier it is going to be to lift up the load. If you had really short handles, you would have poor mechanical advantage.

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压杆抬起，即停机； 盖子没有盖好，机器不能启动； 多重限位开关，保证安全生产；

One interlock stops the machine when the lever is lifted, A second interlock prevents the machine from starting if cover is not in place;

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正确的上挥杆姿势是右手上臂内侧应该紧贴右臂腋窝，右臂手肘与伸直的左臂呈一个倒三角形。然而一些球手在上杆的时候右臂向上抬起而并非紧贴身体。

Correct gesture for back swing is that the right upper arm's inside should be close to right armpit, while right elbow shapes an inverse triangle with unbend left arm.

youdao

正确的上挥杆姿势是右手上臂内侧应该紧贴右臂腋窝，右臂手肘与伸直的左臂呈一个倒三角形。然而一些球手在上杆的时候右臂向上抬起而并非紧贴身体。

Correct gesture for back swing is that the right upper arm's inside should be close to right armpit, while right elbow shapes an inverse triangle with unbend left arm.

youdao