硫酸亚铁

Only two of these additives, ferrous sulfate and methanol were effective on the grafting of AAm.

而在AAm反应体系中，只有硫酸亚铁和甲醇有利于接枝反应。

The experimental results show that when the ratio of seven water ferrous sulfate amount: Calcium carbonate powder amount: Ferri waste residue amount =1.6∶1∶1, desulphurization effect of the obtained product is the best. Each gram of this kind of desulfurizer can completely absorb the sulfur element, which is included by 0.064 9 g five water sodium sulfide.

实验结果表明：当七水硫酸亚铁∶碳酸钙粉末∶含铁废渣=1.6∶1∶1时，制备的脱硫剂脱硫效果最好；每克脱硫剂可全部吸收0.0649g五水硫化钠中的硫元素。

Synthesis experiments of butyl acetate were done with ammonium ferric hydrogen phos- phate as catalyzer.

以硫酸亚铁和磷酸二氢铵为原料，以聚乙二醇-400（PEG-400）为表面活性剂，经低热固相反应合成得到磷酸氢铁铵，经XRD分析表征证实了产物的分子式为（NH4）Fe（HPO4）2。

The main products are: chloride, polyacrylamide, ion exchange resins, protopine, three acid, filter, ferric chloride, ferrous sulfate, as well as the chemical reagent and so on.

主要产品有：聚合氯化铝、聚丙烯酰胺、离子交换树脂、片碱、三酸、、滤料、三氯化铁、硫酸亚铁、以及化学试剂等等。

The relationship between coating microstructure and electromagnetic properties of electroformed Ni-Fe alloy s was studied.

研究了电铸镍铁合金制备过程中工艺条件对电铸层成分的影响，获得含铁质量分数20%电铸层的最佳工艺条件为镀液硫酸亚铁含量6g/L、pH值2.5、温度55℃、电流密度3.5A/ dm~2；讨论了镀层形貌及电磁性能的变化关系。

Effects of different carbon,nitrogen source and inorganic salt on the production of elastase were studied.

针对不同碳氮源及无机盐对芽胞杆菌EA915产弹性蛋白酶的影响进行了研究，结果表明，最适碳源为葡萄糖，最适氮源为酵母膏，无机盐硫酸镁，硫酸亚铁对弹性蛋白酶的产生有促进作用。

Despite NH3-H2O is consumed in chemical reaction,(NH4)2SO4 can be directly reclaimed for the chemical fertilizer or ammonia,and ammonia can be recycled as precipitating agent .

与传统的酸法制备铁黄颜料工艺不同的是，本研究用NH_3·H_2O代替NaOH作沉淀剂制晶种，在二步氧化中通过滴加氨水和硫酸亚铁溶液替代铁皮。

The technology factors of affecting the coating and red iron oxide pigment were analysed.

以硫酸法生产钛白的副产物硫酸亚铁为原料，用干法制备了氧化铁红颜料。

The iron transformation , their effects on soil factors and iron availability of compound iron fertilizer (CF,self-made iron fertilizer) and sulphate iron(FeSO 4) in calcareous soil were investigated by using soil incubation method.

通过土培试验的方法，研究了复混铁肥、硫酸亚铁两种肥料在石灰性土壤中的形态转化、对土壤因子的调控作用及在有效性上的差异。

The characteristics of two technologies in vacuum-crystallization-system were discussed during the production process of titanium dioxide with sulphate process.

分析了硫酸法钛白生产过程中真空结晶系统的两种工艺技术路线的特点以及硫酸亚铁结晶过程的行为，认为采用两级蒸汽喷射法，可有效保证喷射器工作在最佳工作区间，并对其操作参数的优化进行探讨。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失