pitted thickening是什么意思


中文翻译纹孔加厚

网络释义

1)pitted thickening,纹孔加厚2)spiral thickening,螺纹加厚3)reticulate thickening,网纹加厚4)scalariform thickening,梯纹加厚5)processing for tap hole,螺纹孔加工6)upset and threaded male end,加厚的阳螺纹端

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