双语例句
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Roller in the simple, zinc plating production.
从事简单的滚、镀锌电镀生产。
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The process flows and formula of new system of non-cyanide alkaline zinc plating were introduced.
介绍了新型无氰碱性镀锌体系的工艺流程和工艺配方。
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Zinc plating chromic acid salt after the passivation, corrosion resistance can improve 6 to 8 times.
锌镀层经铬酸盐钝化之后，耐蚀性可提高6 ~ 8倍。
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