硫酸

Chlorine, sulfuric acid, hydrochloric acid, nitric acid is my company's main products.

液氯，硫酸，盐酸，硝酸是我公司的主要产品。

It is most usually marketed in the hydrochloride and sulfate forms.

这是最通常销售的，在盐酸和硫酸的形式。

MMA is produced by the method of acetone-cyanhydrin mainly in our country. The synthetic route is complex, the technical line is long, and the yield is low with high cost after many steps. Hydrocyanic acid is used as raw material, the treatment of numerous waste acid is difficult . Furthermore, concentrated sulfuric acid consumed in this method corrodes equipments and pollutes the environment seriously.

我国MMA的生产以丙酮腈醇法占主导地位，合成路线复杂，生产工艺长，多步反应后产率低，成本高，其采用有剧毒的氢氰酸为原料，产生大量难于处理的废酸，所消耗的浓硫酸对设备腐蚀性大，对环境污染严重，因此开发新的MMA工艺路线很有必要。

Zirconia balls are inert to corrosive materials with the exception of hydrofluoric acid and hot, concentrated sulfuric acid.

氧化锆球是惰性，以腐蚀性物质与除氢氟酸和热，浓硫酸。

Pickling can be done in batch or continuous processes typically using hydrochloric, sulfuric, nitric or hydrofluoric acid.

酸洗可以通过批量或连续工艺过程来进行，典型的方法是使用盐酸、硫酸、硝酸和氢氟酸。

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。

To explore the simultaneous determination of hydrogen chloride and sulfate in the air of workplace by one sampling.

目的 探讨一次采样同时测定工作场所空气中氯化氢和硫酸的方法。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, t...

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, the time...

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, the time and temperature of heating hexafluorophosphoric acid, and refrigerants on the yield and the content of phosphorus pentafluoride was studied.

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。