盐酸

Compared with the time, the impact of temperature factors on the layer thickness is greater. The surface hardness of 45 steel is greatly improved for the exist of FeB; the corrosion resistance of boronizing layer is excellent which can resist hydrochloric acid, sulfuric acid and sodium hydroxide.

相比而言，温度对渗硼层厚度的影响大于时间的影响；渗硼层中FeB相使表面硬度显著提高；渗硼层抗盐酸、硫酸、氢氧化钠腐蚀性优良。

A new production process is proposed, in which the acid sludge is removed and the pickling liquor is neutralized once with lime milk after defluorination.

对我国化工企业现行的盐酸法饲料级磷酸氢钙生产工艺的现状进行了介绍与分析，指出了存在的问题，提出了一种新的生产工艺，即去渣一段中和法。

Experimental results show that the reaction between hydrochloric acid and sludge under airtight condition is an equilibrium reaction, the reaction rate decreases exponentially with the increase of the initial pressure, the system gelling time increases with the decrease of the pH value, and the plugging performance of the waterglassgel enhanced foam system is superior to that of ordinary foam system due to the small foam diameter and high interfacial film strength.

实验结果表明：盐酸与污泥的反应在密闭条件下是一个平衡反应，且其反应速度随初始压力的增加呈指数降低；体系的胶凝时间随着pH值的降低而增加。由于体系的泡径小，界面膜的强度高，因而水玻璃凝胶增强泡沫体系的封堵效果明显优于普通泡沫体系。

The brickwork needs to be scrubbed whilst hosing the acid and sludge.

用软管淋浇盐酸和碎屑时，需要擦净砖面。

The results show that garlic can obviously slow down the corrosion rate of steel in hydrochloric acid, and the inhibitor efficiency reaches 95.4% in 15% HCl at 80℃.

结果发现，大蒜汁在酸性溶液中具有良好的缓蚀效果，在80℃下的15%盐酸溶液中缓蚀效率最高可达95.4%，缓蚀率随着酸浓度的增加而逐渐降低。

Li C J. Study on kinetics of low carbon steel hydrochloric acid corrosion.

李春杰。盐酸腐蚀低碳钢的动力学研究。

When alkali cellulose is reacted with the sodium salt of chloroacetic acid, the sodium salt of the carboxymethyl ether (cellulose-O-CH2-CO2-Na+) is formed.

当碱性纤维素与盐酸的钠盐反应，羧甲基醚钠盐生成。

Sulfuric acid series, hydrochloric acid (AR hydrochloride, CP hydrochloric acid) series, nitric acid, phosphoric acid, boric acid, protopine, soda ash, ammonia, acetic acid, bleaching powder, chloride, alkaline chlorine of aluminum, nickel chloride, nickel sulphate, polyacrylamide, such as hydrogen peroxide.

硫酸系列，盐酸系列，硝酸，磷酸，硼酸，片碱，纯碱，氨水，冰醋酸，漂白粉，聚合氯化铝，碱式氯化铝，氯化镍，硫酸镍，聚丙烯酰胺、双氧水等。

Its stability was investigated after calcination and after separate treatments in boiling acid, base and different ammonium salt solutions for 6h.

采用三段晶化法合成了MCM-22分子筛，研究了MCM-22分子筛的热稳定性，分别用盐酸、NaOH和铵盐溶液在沸腾条件下处理MCM-22分子筛6h，考察MCM-22分子筛对酸、碱、铵盐的稳定性。

Through a study of the corrosion inhibition by polyarcylic acid and dodecylbenzyldimethyl ammonium bromide for pure iron in HCl solution, this paper presents the development of a new method not only for the rapid evaluation of the efficiency of a corrosion inhibitor, but also for the quantitatively determination of the type of corrosion inhibitor.

研究了聚丙烯酸、苯扎溴铵在工业纯铁／盐酸体系中的缓蚀性能，推导了一种既能快速测出腐蚀缓蚀剂的缓蚀效率又能确定腐蚀缓蚀剂类型的新方法，定义了能够确定腐蚀缓蚀剂类型的因子P。

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。