Modern writing inks usually contain ferrous sulfate with a small amount of an acid; on paper they darken and bond becoming permanent.
现代写字用的墨水通常包括了硫酸亚铁和少量的酸；写在纸上，颜色会越来越深，且能保持永不褪色。
The ferrous oxalate with crystal water was prepared with ferrous ammonium sulfate and oxalic acid in acid medium.
采用硫酸亚铁铵和草酸溶液在酸性介质条件下合成含有结晶水的草酸亚铁。
A new process that industrial nitric acid reacts with iron chippings and shavings to produce ferrous nitrate solution is presented.
本文介绍了采用工业硝酸酸化废旧铁屑、制取硝酸亚铁溶液，并以该溶液为主要原料研制新型铁-铬系中温变换催化剂。
Oscillatory features of the reaction between malonic acid, ferrous o-phenanthroline ion and bromate ion have been studied.
本文研究了丙二酸、邻菲罗啉亚铁离子和溴酸根离子之间反应的振荡现象。
Vitamin B12 is destroyed by oxidizing and reducing agents, by aldehydes, ascorbic acid, ferrous salts, vanillin and acacia.
维生素b12可被氧化剂和还原剂、醛类抗坏血酸、二价铁盐、香草醛和阿拉伯树胶破坏。
Main raw materials: amino acid chelate trace elements, glycine zinc, ferrous iron, manganese, vitamin C carrier: lactose, starch, beef powder.
主要原料：氨基酸螯合微量元素，甘氨酸锌，甘氨酸亚铁，蛋氨酸锰，维生素C载体：乳糖，淀粉，牛肉粉。
Applicable for acid and alkali welding rods for welding all non ferrous metals.
适用于酸性、碱性等各类焊条，能够焊接一切有色金属。
The method of steel manufacture acid cleaning discarded hydrochloric acid reactivation use and recover ferrous oxalate.
钢铁工业酸洗废弃盐酸再生利用并回收草酸亚铁的方法。
Adopting Monsanto technology, the Daye Non-ferrous Metal Corp. has improved its traditional sulfuric acid facility from converter fume raw material.
大冶有色金属公司引进美国孟山都公司的先进技术，对传统转炉烟气制酸装置进行全新改造。
The method is convenient, accurate, sensitive, and suitable for the quality control of Compound Ferrous Sulfate and Folic Acid Tablets.
该方法快速、准确、灵敏，可用于复方硫酸亚铁叶酸片的质量控制。
The method is convenient, accurate, sensitive, and suitable for the quality control of Compound Ferrous Sulfate and Folic Acid Tablets.
该方法快速、准确、灵敏，可用于复方硫酸亚铁叶酸片的质量控制。
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