但是如果美国的减速持续下去，这些富国也会衰退，尤其是在财政紧缩发力的时候(参见文章)。
But if America's slowdown persists, they too will flag, particularly as fiscal austerity kicks in (see article).
基于减速器的齿轮、轴、轴承、及其校核，文章给出了设计和计算。
Based on the gear reducer, shaft, bearings, and checking, the article gives the design and calculation.
文章介绍了一种航天器回收降落伞系统的设计程序，重点介绍了回收控制方案和减速方案的设计。
In this paper, a kind of design program about spacecraft's recovery-parachute system is introduced, recovery control project and decelerate project are showed particularly.
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