The paper introduces the composition and the working axiom of rainbow metal roof's make-up machine, and the working axiom of the hydraulic system.

介绍了彩虹金属屋顶成型机的构成、工作原理，通过系统原理图介绍了液压驱动系统的组成、工作原理及特点。

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The working process, structure and control system of a three-dimensional manipulating robot for cold extrusion forming of metal have been introduced.

介绍了用于金属冷挤压成形的三维操作机器人的工作过程、结构与控制系统。

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The effect of temperature and the working property of the hydraulic system is showed, the oil temperature automatic control system of metal packer hydraulic 'press is designed.

论述了温度对液压系统中液压油粘度的影响及油液粘度对液压系统工作性能的影响。设计了金属打包液压机油液温度自动控制系统。

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