6252| 12
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弱硬問(wèn)題,這種現(xiàn)象經(jīng)常遇到,,求詳解 |
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點(diǎn)評(píng)
很大程度上是因?yàn)椋摪逑鄬?duì)冷卻速度快,,而鉆頭相對(duì)冷卻較慢,。。,。,。。,。,。
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