Slowly she threaded her way back through the moving mass of bodies.
她在行人中缓慢穿行，挤了回来。
Holes are bored in the armature to decrease moving mass and reduce air damped effects.
设计中在减小运动质量的同时，考虑降低空气阻尼的影响，采取在衔铁上打孔的措施。
Moving mass method is a practical structural damage identification method with much prospect.
移动质量法是一种极有前景的结构损伤识别实用方法。
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