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1·The method and skill for balancing a complex oxid - reduction reaction equation are discussed in this paper.

本文介绍复杂氧化还原反应式配平的方法和技巧。

2·The ore is lead mine of partial oxidation, the lead ore consists chiefly of galena and cerusite. 39% of cerusite is the most oxid in lead ore.

所处理矿石为半氧化铅矿石，矿石中铅以方铅矿和白铅矿形式产出，铅的氧化物主要为白铅矿，分布率达39%。

3·The reaction equation in a complex oxid - reduction, according to the authors, can be balanced by combining oxidization algorithm with coefficient algebra, which gives more than one correct answer.

氧化数法结合系数代数法可以求出复杂体系氧化还原反应配平式，但正确答案往往不是唯一的。