一酸的

The method is characterized in that the acid solution of one of hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and hydriodic acid is divided into two portions; aniline monomer and ammonium persulfate are respectively added; then aniline monomer solution and ammonium persulfate solution can be prepared.

一种乙酸松油酯的制备方法，其特征是，将盐酸、硫酸、硝酸、磷酸、氢碘酸中任一种酸溶液分成两等份，并分别加入苯胺单体和过硫酸铵，形成苯胺溶液和过硫酸铵溶液。

In this paper, initiator is dissolved in 1-bromopropane which is solvent. Then the propene and hydrogen bromide that can be dissolved in 1-bromopropane are inlet in l-bromopropane when initiator is decomposing. The reaction occurs in fluid phase and high-purity 1-bromopropane is synthesized by one step method. In this paper, the material HBr is synthesized with NaBr and sulfuric acid at the presence of hydrobromic acid.

本论文以1-溴丙烷为溶剂，将引发剂溶于其中，加热到引发剂开始分解时再通入丙烯和HBr，使二者溶解于1-溴丙烷中，在液相中进行反应，实现丙烯&一步法&合成高纯1-溴丙烷利用NaBr与硫酸在氢溴酸存在下反应制备HBr气体，以作为合成1-溴丙烷的原料。

Any of various enzymes that hydrolize the carboxyl radical.

脱羧酶酶的一种，可水解羧基酸

It is a major type of maize hydroxamic acidglucoside.

丁布葡萄糖苷是玉米中氧肟酸葡萄糖苷的一种主要类型。

A new high-molecular-mass hydroxamic acid containing phenyl as high efficiency flocculant was synthesized by microemulsion polymerication.

采用微乳液聚合法合成了一种带有苯环结构的新型氧肟酸类赤泥絮凝剂。

A new high-molecular-mass hydroxamic acid containing phenyl as high efficiency flocculant was synthesized by microemulsion polymerication.

摘 要：采用微乳液聚合法合成了一种带有苯环结构的新型氧肟酸类赤泥絮凝剂。

After pre-treating by the mixed reagent-Hc and one rough flotation( the agent dosage was: sodium silicate 2500g/t, carloxy methyl cellulose 100g/t, hydroximic acid 700g/t, turpentine 20g/t), the concentrate containing 30-31% TiO2 with a recovery of 33-35% can be obtained.

运用混合试剂Hc(用量为47.6kg／t)预处理并经一次粗选(药剂制度为：水玻璃2500g／t，CMC100g／t，羟肟酸700g／t，2~#油20g／t)后，可得到TiO_2品位为30～31％，TiO_2回收率为33～35％的精矿指标。

Wash. Sodium cocoyl isethionate can be used as surfactant for cosmetics and toiletries

基磺酸钠是一种高档洗涤用品的表面活性剂，广泛用于生产香皂，沐浴露，洗面奶，合成

The oxido-reduction and reduction-reoxidation specificity of heteropolyacid salts containing various kinds of alkali metals used for one-step oxidition of isobutyraldehyde to produce methacrolic acid was studied by ESR method.

用ESR法研究了异丁醛一步氧化制甲基丙烯酸过程中所用杂多酸盐催化剂的氧化－还原特性。

A salt or ester of isocyanic acid .

异氰酸形成的一种盐或酯。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。