long distance transmission pipe
long distance transmission pipe
长距离输油管
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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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