本文阐述了回转周期结构振动特性分析的有限无法。
The finite element method for vibration characteristic analysis of periodical gyro-structures is described in this paper.
其原理是通过直接测定轮带和筒体的回转周期，来自动计算轮带与筒体之间的动态间隙。
While directly measuring the cycle time of the tyre and shell, the dynamic clearance be-tween the tyre and shell can be carried out by some calculations.
事实上，由于现状如此糟糕，大家普遍预计经济将停止下滑，并伴随公司库存周期回转和恢复订货在未来6个月内开始反弹。
Indeed, things are so bad that it is generally assumed that they cannot get any worse, and will instead improve over the next six months as the inventory cycle turns and firms restock.
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