Objective. To understand how height patterns (loss and gain) at AD and PD affects the PF contact loading during moderate and severe grades of cervical disc degeneration (DD).

目的：理解在中、重度分级的颈椎间盘退变(DD)过程中，AD和PD高度变化(丢失和增加)如何影响PF连接负荷。

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Because the loading distribution of each bearing are decided by the height mark, which will affect the stability of the bearing.

因为标高决定了各轴承的载荷分布，从而直接影响转子轴承油膜的稳定性。

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The materials of tube for loading particles and the load height have less effect on the apparent mass burning rate.

装填药粒用的壳体材料和药粒装填高度对传火速度的影响不显著。

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