3699| 4
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變形量突然增大(彎曲),,淬火完畢后,,工件不容易磷化,,什么原因? |
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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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