The nitrogen in the block Si3N4 can be determined accurately by inert gas fusion thermal conductivitymethod combined with 5-element bath.
惰气熔融法结合五元浴能够准确测定烧结氮化硅中氮。
2
Three temperature and three conductivitymethod for the real time measuring the concentrations of the chemical composition of sodium aluminum solution is proposed.
提出了实时测量铝酸钠溶液化学成分（苛性钠、氧化铝和碳酸钠）浓度的三温三电导法。
3
Growth recovery method and electrical conductivitymethod were used to determine cold hardiness of 38 Mei flower cultivars belonging to different systems, groups and forms.