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請(qǐng)教螺紋同軸度標(biāo)注的作用 |
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點(diǎn)評(píng)
以前在中日合資公司時(shí),確實(shí)有見(jiàn)過(guò)日本圖紙這樣標(biāo)注,內(nèi)螺紋與外面的沉孔有同軸要求,不過(guò)精度沒(méi)這么高。
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