因为所有的化合物都是电中性的，因此在氧化还原反应中某种物质一定获得了电子。
Since all compounds are electrically neutral, there also must be a species in the oxidation-reduction reactions that gains electrons.
本发明以大环化合物修饰的石墨烯作为催化剂，应用于电池的酸性、中性和碱性条件下氧还原的催化。
The grapheme modified by a macrocyclic compound is used as the catalyst and is used for catalyzing the oxygen reduction of batteries under acidic, neutral and alkaline conditions.
成矿溶液为中等盐度的中性偏碱性水； 成矿作用是在低温、低压、弱氧化或弱还原条件下进行的。
The ore is formed in the conditions of low temperature, low pressure and weak oxidation or weak reduction.
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