红外测定 meaning in English

infrared measurement

Effect of water content on the determination of routine chemical components in tobacco by near - infrared spectroscopy
烟样水分质量分数对其常规化学成分近红外测定的影响
Sampling and analysis of nickel , ferronickel and nickel alloys - method for determination of sulphur in nickel , ferronickel and nickel alloys by infra - red absorption after induction furnace combustion
镍镍铁和镍合金的取样与分析.第7部分:感应电炉燃烧后用红外测定镍镍铁和镍合金中硫的方法