质量百分浓度

确定了苯胺电解合成的最佳条件：温度为40℃，硫酸的质量百分浓度为50%，电流密度为15A/dm2，媒质的质量百分浓度为3.0%。

The optimum conditions of electrolytic synthesis of aniline are 40 ℃, 50 % sulphuric acid , 15A / dm 2 current density and 3 % catalyst .

另一方面，混合酚类在水中完全混溶区域显著扩张，对苯二酚最大质量百分浓度可达25.8%。

Or it is miscible completely . The miscible area of phenols in water is significantly enlarged . The solubility of hydroquinone is as great as 25.8 % .

考察了硝酸铈的质量百分浓度、焙烧温度、焙烧时间等因素对其催化性能的影响；

Many factors were investigated which may affect the catalytic behavior such as mass percent concentration of Ce ( NO 3 ) 3 , roasting temperature and time and etc.

结果表明：单体（AM）在液相中质量百分浓度为10%、交联剂与单体的比（MBAM/AM）较低时，悬浮体粘度较低；

The results show , when the mass fraction of AM is 10 % and the ratio of MBAM to AM is low in liquid , the viscosity of suspensions is low ;

实验表明，双向底液合成方式最佳，氯化钙底液质量百分浓度的增加和体积的增加都有利于反应体系过饱和度的降低。

The experiments show that the two-way-the base solution combination is the best . The increasement of the mass percent concentration and volume of calcium chloride solution contribute to the reduction of reaction system super saturation .

从冶金熔体中组元的活度及其标准态的概念和定义出发，分析和讨论了在冶金领域应用质量分数和质量百分浓度的差异。

Proceeding from the concepts and definitions of the activities of components in metallurgical melts and their standard states , the discrepancies about applying the mass fraction and mass percent concentration to metallurgy were analyzed and discussed .