An optimum design is carried out with the hydraulic fluctuation factor as object function on the basis of a description of the evaluation parameters of lifting mechanism.

本文在介绍举升机构评价参数的基础上，以油压波动系数为目标函数，对自卸车的举升机构进行了优化设计。

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The main parameters of the hydraulic support, such as working resistance, setting load and support height, are analyzed and its main structures are design.

本文对该类支架的工作阻力、初撑力、支护高度等主要参数进行了分析计算，并对其主要结构进行了设计。

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Designing the satisfactory model runner according to the parameters of the power station is the key in hydraulic design.

根据电站参数设计出性能优良的模型转轮是水轮机水力设计的关键。

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