查询词典 sodium hydroxide

Sodium hydroxide in order to enable complete saponification Handmade Soap after making necessary to place one to two months Time to complete saponification.

为了使氢氧化钠完全皂化，手工皂制作后必需放置一至两个月的时间来完全皂化。

By silver nitrate solution and the role of sodium hydroxide solution obtained.

由硝酸银溶液与氢氧化钠溶液作用制得。

Nanometer sized needle like and spherical shaped zinc oxide was prepared by using single step hydrolysis method directly,zinc chloride and sodium hydroxide as raw materials.

以氯化锌和氢氧化钠为原料，采用直接水解一步法制备了针状和球形纳米氧化锌。

Results The major occupational hazards in the expansion project were sulfuric acid, hydrochloric acid, ammonia, sodium hydroxide, cyanide, nickel and its compounds, formaldehyde, organic solvent and noise. Many protective measures would be carried out in this expansion projects.

结果该建设项目在生产过程中存在的主要职业病危害因素有硫酸、盐酸、氨、氢氧化钠、氰化物、镍及其化合物、甲醛、有机溶剂、噪声等，根据有关规定企业拟采取相应的措施。

Introduction of a large quantities of sodium hydroxide can dramatically accelerate the reactive rate of the photoreduction process.

进一步的研究还表明，在反应体系中引入大量的氢氧根离子能大大的加快反应速度。

In the sodium hydroxide concentration, temperature 20 ~ 25 ℃ to obtain a higher yield, and reaction conditions and mechanism are discussed

在氢氧化钠浓度0.3%，温度20~25℃时获得了较高产率，并对其反应条件及机理进行了讨论。

For example , if improved moisture adsorption is sought, the sodium hydroxide concentration is kept low.

例如，如果希望改善吸湿性，氢氧化钠溶液的浓度应较低

Kinds of solid base,quantity of manganese salt,quantity of acetylacetone,quantity of sodium hydroxide were investigated.

考察了锰盐、固体碱的种类、乙酰丙酮的量对产率的影响。

An approach to the relationship between free sodium hydroxide in boiler water and its conductivityhas been made.

对炉水中游离氢氧化钠浓度与电导率和pH值的关系进行探讨。

The main goal of recovery of sodium hydroxide was the economies due to the high replacement cost of this chemical.

回收氢氧化纳的主要目的是在经济方面，因为它大大补偿了化学药剂消耗费用。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。