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北京石油化工学院2026年研究生招生接收调剂公告
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shiranjiang

金虫 (正式写手)

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幻雪之恋: 金币+50, 翻译EPI+1, ★★★很有帮助 2014-05-28 22:33:52
The suitable solution of  methyl methacrylate (MMA) was chosen by  exploring
several electrochemical passivation solution that were applied to zinc.The influence of corrosion resistance of passivation film with different concentration and passivation time of passivation liquid was studied.The test of corrosion resistance of passivation film was carried out through measuring  the changes of open circuit potential over time and salt water immersion experiment,it found that the corrosion resistance was improved significantly compared with the sample that was not passivated, but  a bit less than the passivation film of  chromate.
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