The water was reacting with the ferrous iron in the tank.

水与水箱中的铁质产生化学反应。

Add Ferroin indicator and titrate with 0.025 N ferrous ammonium sulphate solution.

加入亚铁菲绕啉离子，用滴定法测量硫酸亚铁铵溶液。

Metal complexants such as ferrous complexant and cobaltic complexant are common used in this process.

液法常用的金属有亚铁和钴。

Among other reagents used have been ??and titanous ion; a mixture of ferrous ion, oxygen, ascorbic acid , and ethylenetetraaminetetraacetic acid.

用过的其它试有?Ш脱穷牙胱印⒀翘?离子氧，抗坏血酸和乙四胺四乙酸混物。

CONCLUSION Ferrous Lactate tablet is a highly effective drug as Ferrous succinate tablets and with endurably mild side effects to patients with IDA.

结论乳酸亚铁片治疗IDA疗效好，胃肠不良反应轻，患者耐受性好，是治疗IDA安全、有效的口服铁。

Compund polymer with alumium polychloride and ferrous polysulfate as its main ingredients was used as water scavenging agent in the treatment of dye-house waste water.

用以聚氯化铝、聚硫酸铁为主的复聚物作净水,处理印染废水。