英语语法分析

Coulometric titrations of titanous ion give an average precision and accuracy of about 0.2% for milligram quantities.

毫克量亚钛的库仑滴定，平均误差和平均偏差约为0.2％。

Coulometric titrations of milligram quantities of titanous ion and hypovanadous ion give errors less than 1 per cent.

用电生醌分别进行毫克量亚钛和二价钒的库仑滴定，误差为千分之几。

Heated in water bath, uranyl ion and nitrate radical adsorbed on resin are replaced into solution by sodium bisulfate, then are determined by titanous method and spectrophotometry, respectively.

在水浴加热条件下，用硫酸氢根将吸附在树脂上的铀酰离子和硝酸根离子置换到液相中，之后分别采用亚钛法、分光光度法进行测定。