Firstly, from multiple angles, deal with concrete operating steps, critical control points, the scope of application and the advantages and disadvantages of the four ways.

首先，多角度论述了四种方式的具体操作步骤、关键控制点、适用范围及优缺点。

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Firstly, from multiple angles, deal with concrete operating steps, critical control points, the scope of application and the advantages and disadvantages of the four ways.

首先，多角度论述了四种方式的具体操作步骤、关键控制点、适用范围及优缺点。

youdao