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。
The main body metal structure of extracting core machine for heat exchanger is the key component of high altitude working vehicle of the driving heat exchanger's extracting core.
换热器抽芯机主体金属结构是行车式换热器抽芯高空作业车的关键构件。
The crane lifting a lot of debugging contents, including the basic track, metal structure, working structure, traditional system, safety device and machine test.
塔吊起重机械的调试内容很多，包括基础轨道、金属结构、各工作结构、传统系统、安全装置及整机试车。
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