管道系统和元件 (Plumbing System Components) 水配送系统 (Water Distribution Systems) 饮用水处理装置(Drinking Water Treatment Units) ..
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管道系统和元件
Piping systems and components
以上为机器翻译结果，长、整句建议使用 人工翻译 。
溢流阀和管道都是液压系统的重要元件，而溢流阀、管道和定量泵组成的系统又是液压系统的基本回路。
The relief valve and the pipeline are both important components of the hydraulic system, and that system including of relief valve and pipeline and constant pump is the basic loop of it.
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