一元羧的

A series of inhibitors were made from different organic carboxylic acids as monoacid and binary acid to prevent the corrosion of cast aluminum in neutral cooling water.

为了提高中性冷却水系统中铸铝的耐腐蚀性能，通过极化电阻、稳态极化曲线和交流阻抗等电化学方法研究了不同比例一元、二元有机羧酸混合溶液对铸铝的缓蚀性能。

Distribution ratios of complex extraction for different operation conditions were forecasted. Using mass action law, the liquid-liquid equilibrium models of complex extraction of monobasic and polybasic carboxylic acid have been successfully induced, and physical extraction were also considered in the model. On the basis of orthogonal experiments, the models of equilibrium distribution ratios were established. The processes of complex extraction were tested and verified. Comparing experimental data with model values, it could be held that the regression precision of model was rather high and the model supplied fundamental data for industrial amplification and practical use of complex extraction.

采用质量作用定律分析方法，成功地推导了同时考虑物理萃取的一元及多元羧酸络合萃取通用液-液平衡数学模型，并在正交试验基础上建立了磷酸三丁酯络合萃取丁酸、三烷基胺（7301）萃取丁酸、丁二酸、柠檬酸的平衡分配系数模型，从平衡角度对络合萃取过程进行了验证与预测，通过实验数据与模型计算值比较，表明模型的拟合精度较好，从而为络合萃取技术的工业放大与实际应用提供了重要依据。

The principal component of water-soluble acids is the saturated aliphatic diacids of C〓 to C〓 and the saturated aliphatic monoacids of C〓 to C〓; and the water-insoluble acids are organic macromolecular compounds containing a large amount of carbonyl, carboxyl structures and aromatic group.

水溶酸的成分以C〓~C〓的饱和二元脂肪酸和C〓~C〓的饱和一元脂肪酸为主；水不溶酸是含有大量羰基、羧基结构和芳环的有机大分子化合物，其结构非常接近腐植酸。

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。