Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry. Part 2. Amines and aminoisocyanates using dibutylamine and ethyl chloroformate derivatives
Fixed electric double-layer capacitors for use in electric and electronic equipment. Part 2. Group specification for capacitors for power electric and electronic equipment
State system for ensuring the uniformity of measurement. State primary standard and state verification schedule for measuring instruments of electromotive force and direct current