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請(qǐng)教,能根據(jù)斷面分析出鉆頭是怎么折斷時(shí)的嗎? |
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點(diǎn)評(píng)
大俠是一個(gè)實(shí)際經(jīng)驗(yàn)很豐富的人
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點(diǎn)評(píng)
我寫錯(cuò)了,沒(méi)有反轉(zhuǎn),是想問(wèn)進(jìn)刀斷的還是退刀斷的,
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點(diǎn)評(píng)
謝謝
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點(diǎn)評(píng)
謝謝
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點(diǎn)評(píng)
謝謝
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