3794| 6
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不銹鋼件加工后鹽霧試驗(yàn)通不過(guò)(中性鹽霧試驗(yàn)120h),用什么法能夠改進(jìn)? |
點(diǎn)評(píng)
請(qǐng)教一下您,40Cr材料有什么好的防銹工藝?謝謝
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點(diǎn)評(píng)
著色是指什么呢?
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