Spectrophotometric Determination of Urea in Milk with Nessler's Reagent;
纳氏试剂分光光度法测定牛奶中尿素含量
Defects and correcting in determination of HN_3-N by nessler's reagent spectrophotometry.;
纳氏试剂比色法测定氨氮的问题及修正
Experiment was undertaken to detect NH3-N in sea water by Nessler's reagent colorimetry.
进行了用纳氏试剂比色法直接测定海水中氨氮的试验。
In order to replace Nash pumps with turbo-compressors,the following three kinds of plans were put forward:drying in three towers in series,drying in two towers with forced circulation,and drying in two towers in series.