7926| 5
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我的尺寸精度一般是8級,平面度、平行度、垂直度這些形位公差該設幾級啊? |
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小黑屋|手機版|Archiver|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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