7515| 25
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鎢鋼上面的螺紋孔應(yīng)該怎么做 |
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點(diǎn)評(píng)
可以放電哦,以前我搞過(guò)在S136加硬后加螺紋孔
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點(diǎn)評(píng)
本身電極放電 對(duì)鎢鋼來(lái)說(shuō)就慢 為啥不是鎢鋼上面螺絲過(guò)孔?
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