Under the condition of enzymatic oxidation, it was studied by the experiment of oxidative polymerization of catechin, epicatechin, chlorogenic acid and caffeic acid in the cider model system.

在酶促氧化条件下，对模拟苹果酒体系中，儿茶素、表儿茶素、绿原酸和咖啡酸这四种单酚进行氧化聚合反应实验。

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Methods Based on the arsenic stain method principle the condition of reaction acid reducing agent system, measuring strip, and standard colorful board were experimented.

方法利用砷斑法原理进行反应酸、还原剂体系的配比、使用量及使用条件、检测试纸条及标准比色板的制备和条件实验。

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Sphalerite was oxidized and leached by manganese ore in acidic condition (sulfuric acid system), lixivium of which was used to extract indium and separate iron.

利用软锰矿在酸性(硫酸体系)条件下氧化浸出闪锌矿，对其浸出液进行萃取铟分离铁。

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