... 直内螺纹 straight internal thread 直内螺纹连接头 straight female connector 直螺纹连接套筒 ZFGT ...
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Dryseal straight pipe internal thread 干密封燃油直管螺纹
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The internal thread comes within the broad definition of an internal undercut in that the thread forms a restriction which prevents the straight draw removal of the molding from the core.
因为内螺纹构成约束它阻碍零件从型芯的直接脱模所以内螺纹在内凹孔的广义范围内。
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