... long distance on-line facility 远距离联机手段 capability of switching long no-load line 分合长空载线路能力 long-distance pipe line 长途导管 ...
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Discusses the selection line methods of convey coal pipe of long distance, from the angles of selection line principle, and the basic data to collect, etc.
本文从选线的原则、选线需搜集的基础资料等角度，论述了长距离输煤管道线路的选线方法。
Features and effects of in-factory quality supervision during manufacture of long distance transmission line pipe are discussed. It is suggested that understanding standard should be improved.
本文总结了输送管生产驻厂监督工作的特点及作用，指出在对生产标准的理解方面须进一步加强。
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