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绝缘接头与管线连接后，不许在接头5米内起吊管线。
It is forbidden to lift pipe within 5 meters closed to the joint after insulation joint is connected to the pipe.
youdao
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绝缘接头与管线连接后，不许在接头5米内起吊管线。
It is forbidden to lift pipe within 5 meters closed to the joint after insulation joint is connected to the pipe.
youdao