Amelioration design of clutch: applying new structure clutch with five poles, made the engine starting more stable and transmission more reliable.
离合器改进设计：采用新结构的五柱离合器，启动更平稳，传动更可靠。
The final purpose is to provide academic sustainment to the design of the equipment, amelioration of structure and optimization of craft parameter.
最终目的是通过本文的研究，为生物质燃料成型设备的设计、结构改进及工艺参数优化等提供理论与实验依据。
Wears performance of mechanic face seal is analysed. Basis law for design and estimation and amelioration of mechanic seal's invalidation is provided.
作者对机械密封端面的磨损特性进行了分析，以指导和改进机械密封的设计及对密封失效的判断。
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