The net momentum is the vectorial sum of these two, which is this.

总动量为，两者的矢量和，也就是这个东西。

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Therefore there is a total angular momentum which is the vectorial sum of the two.

因此，总的角动量,有两个向量。

youdao

Therefore there is a total angular momentum which is the vectorial sum of the two.

因此，总的角动量,有两个向量。

youdao