a white insoluble radiopaque powder used as a pigment
双语例句
The determination of sulfur in thiolated chitosan resins with barium sulfate nephelometery was developed. 研究硫酸钡浊度法测定硫代壳聚糖树脂含硫量的方法。
In this paper,two methods for analyzing air sulphation rate were studied and compared.One was ion chromatography and the other was barium sulfate spectrophotometry. 本文主要用离子色谱法与改良硫酸钡比浊法对大气硫酸盐化速率进行分析。
