The said liquid consists of blackening liquid and phosphatization liquid.
其由黑化液和磷化液两部分组成。
Experiments were made to determine about technological process of chemical pretreatment, phosphatization liquid and technical condition.
通过优化实验，确定了化学预处理的工艺流程、磷化液组成及工艺条件。
Experiments were made to determine about technological process of chemical pretreatment, phosphatization liquid and technical condition.
通过优化实验，确定了化学预处理的工艺流程、磷化液组成及工艺条件。
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