The structure, characteristics, quality identification, and job practice of polyethylene - aluminum - polyethylene composite pipe are introduced.

介绍了铝塑复合管的结构 、 特点 、 质量鉴别及施工方法.

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To this, the author combines him job practice, discuss metric the action in forestry business management.

对此, 笔者结合自己工作实践, 论述计量在林业企业治理中的作用.

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From the job practice looks, heavy ignored is caught fulfil, the result is big different.

从工作实践看, 重不重视抓落实, 结果大不一样.

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In modern city sewage conduit construction, what mainly uses is top pipe's job practice.

现代城市内的污水管道施工, 主要采用的是顶管的施工方法.

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