1、 The main problems in determination of gold by the back titration for the excessive FeSO4 with potassium bichromate were discussed and experimented.
对重铬酸钾滴定过量硫酸亚铁返滴定法测定金合金中金的主要问题做了探讨和实验。
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2、 Well, we'll ship the bichromate in steel drums and the chromic anhydride in oil cans.
嗯，我们会把重铬酸盐用钢桶装，而无水铬酸则用油罐装。
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