单词：mixed acid
mixed acid的用法和样例：
例句
- Mixed acid should be allowed to flow for 1 minute in order to flush the pipesand cooling system.应让混酸流一分钟，以便冲洗管道和冷却系统。
- This article introduces that using mixed acid of nitric acid and sulfuric acid, beet waste-slag produces industrial product oxalic acid by ordinary pressure hydrocarbonylation.本文介绍利用硝硫混酸常压氧化法，把甜菜废渣制成工业品草酸。
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