7470| 2
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有關(guān)螺紋規(guī)的知識(shí),比如螺紋量規(guī)6g和6h的區(qū)別 |
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小黑屋|手機(jī)版|Archiver|機(jī)械社區(qū) ( 京ICP備10217105號(hào)-1,,京ICP證050210號(hào),浙公網(wǎng)安備33038202004372號(hào) )
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