所以力也会改变方向,这个角动量，角动量会保持追着力,并开始自由地转动。

So the torque will also change direction and so this angular momentum, spin angular momentum will keep chasing the torque and start to rotate freely.

youdao

定律也不会因为你观察的方向不同而改变(这是转动对称性，Rotational Symmetry)。

Nor do the laws of nature change depending on the direction in which you look (rotational symmetry).

youdao

现在它这样动，我将重新做这个，实验，改变它转动的方向，它就会反方向运动了。

Now it's going this way and I'm going to redo the experiment, changing the direction of rotation, and then it will go the other way around.

youdao

我没有改变力的方向，它在转动，从下面看，逆时针方向。

I've not changed the direction of the torque, and now it is rotating, as seen from below, counterclockwise.

youdao

一种能使刷头随转轴一起转动，并且还可以改变旋转方向的双向旋转式电动牙刷。

The utility model relates to a two-way rotary electric toothbrush. The brush head of the utility model can rotate with a rotating shaft and the rotating direction can be changed.

youdao

在车里，如果司机想改变方向，他转动方向盘。

In a car, the driver gives the car direction when he wants to change the car's behavior.

youdao

再过一会，孩子就能明白转动车把方向就能改变前进方向，同时也能改变后退方向。

Then he will attempt to control the bicycle to move back and forth and understand to turn the handlebar to change the direction of going forward and backward.

youdao

你可以转动座椅，改变你的视线方向。

You can swirl the chair and shift your point of view.

youdao

你可以转动座椅，改变你的视线方向。

You can swirl the chair and shift your point of view.

youdao