| 摘要 |
A union in which a conduit is joined to a fitting so as to form a contact zone of high gripping pressure between the wall of the conduit and an engaging surface of the fitting, this contact zone being outboard of the region of highest stress formed in the wall of the conduit, an open volume being formed in the union adjacent this contact zone, the fitting including an abundance of liquid lubricant in at least a portion of this open volume.
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