钍试剂 meaning in English

thorin
thoron

Determination of thorium in uranium ore concentrate by thorin photometric method
铀矿石浓缩物中钍的测定钍试剂光度法
Air quality ; determination of mass concentration of sulfur dioxide in ambient air ; thorin spectrophotometric method ; identical with iso 4221 : 1980
空气质量.环境空气中二氧化硫质量浓度的测定.钍试剂
Methods for measurement of air pollution . determination of mass concentration of sulphur dioxide in ambient air : thorin spectrophotometric method
空气污染度的测量方法.第7部分:环境空气中二氧化硫质量浓度的测定:钍试剂分光光度法