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車內(nèi)孔為什么會(huì)有溝痕 |
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點(diǎn)評(píng)
非常感謝,!
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點(diǎn)評(píng)
感謝
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點(diǎn)評(píng)
感謝,!是黃銅!不保密,!特希望和大家交流
這個(gè)說(shuō)法對(duì)的,,如果把刀尖倒R0.5左右的圓角,車出來(lái)的表面更優(yōu)秀,,黃銅就得這么干,。
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