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螺栓,螺紋,螺栓孔,螺紋孔,螺紋底孔之間的關(guān)系 |
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點(diǎn)評(píng)
有可能他說(shuō)的螺栓孔是過(guò)孔哦!
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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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