I add angular momentum in this direction and you see that here.
我在这个方向加入了角动量，你们可以在这看到。
Angular momentum is now in this direction.
角动量现在是在这个方向。
Angular momentum is in this direction.
角动量是这个方向了。
And so the angular momentum of spin of the wheel is in this direction.
所以旋转的角动量是，这个方向。
Torque is in this direction; spin angular momentum's in this direction.
力是这个方向，旋转角动量是这个方向。
Torque is in this direction; spin angular momentum's in this direction.
力是这个方向，旋转角动量是这个方向。
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