A combined acid cleaning technique of alkaline and acid cleaning with oxidizability was developed in the proress of trial-produrtion of armour-piercing shell body.

介绍穿甲弹体氧化性碱洗与氧化性酸洗相结合的酸洗新工艺。

By replacing sulphoacid and silver sulfate solution by combining acid of sulphoacid and phosphoric acid in the back-flow process,the time is shortened and analysis is quicker.

改用硫磷混合酸代替硫酸—硫酸银溶液进行回流操作可极大地缩短回流时间，提高分析速度，得到满意结果。