The momentum of the cluster as a whole would not change if there are no external forces on the system, 0 if the net sum, the total external force, is zero.
星云的动量,作为整体是不变的,若无外力作用于系统，如果外力总和为。
that if the external force, 0 the total external force on the whole system is zero, it means that the momentum cannot change.
,如果外力，作用于系统的外力为，意味着动量没改变。
In this paper an advanced design concept of zero-bias momentum 3-axes attitude control system consisting of four skew reaction wheels is presented.
本文提出一个与常规不同的零动量——偏置动量三轴姿态控制系统的设计方案。该系统由四个斜装的反作用轮组成。
In this paper an advanced design concept of zero-bias momentum 3-axes attitude control system consisting of four skew reaction wheels is presented.
本文提出一个与常规不同的零动量——偏置动量三轴姿态控制系统的设计方案。该系统由四个斜装的反作用轮组成。
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