Objective: Discussion acetabulum double strut compound fracture clinical characteristic and surgery method.

目的：探讨髋臼双柱复杂骨折的临床特点和手术方法。

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The characteristic of quick-return of offset double crank slider mechanism was analyzed in this paper. The synthesis method and curve of this mechanism with minimum transmission angle were presented.

本文分析偏置双曲柄滑块机构的急回运动特性，给出了按最小传动角设计偏置双曲柄滑块机构的设计方法和设计曲线。

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This paper studies the characteristic parameters of the engine mounting system and puts forward a method of employing the double-line cushion material for the engine mounting system.

对悬置系统特征参数进行研究，并提出采用双直线型缓冲材料作为汽车发动机悬置系统的方法。

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