介绍了几种检测磷化工作液中亚硝酸盐浓度的原理、试剂和计算方法。
The principles, reagents and calculation procedures of the several methods of testing the amount of the nitrite existed in bonderizing agent are introduced.
介绍了几种检测磷化工作液中亚硝酸盐浓度的原理、试剂和计算方法。
The principles, reagents and calculation procedures of the several methods of testing the amount of the nitrite existed in bonderizing agent are introduced.
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