在接头中，流线没有固定图形。

In a junction, there is no fixed pattern of streamlines.

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有时，在接头处用一个小杠杆就能检测出耐用性。

Wear may sometimes be detected by using a small pry bar under the joint.

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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.

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