It was found that the sulphonamide group and the substituents on nitrogen atom within the molecule would effect the properties of these dyes.

坚牢度和光,发现磺酰胺基和在它的氮原子上的取代基影响该类染料的能。

As a especially effective collector for processing copper sulphide ore, methyl sulphonamide features good selectiveness and strong collection.

甲基硫氨酯作为硫化的别有效的捕收剂,具有择好、捕收力强的。