单词	執爲己有
释义	同Assumption
随便看	tracer industrial applications tracer information tracer ion tracer--ion tracer isotope tracer--isotope tracer isotope atom tracer isotope diagnostics tracer isotope diagnostics ostics tracer-- isotopic tracer lab tracer-labeling tracer-labelling tracer laboratory tracer--laboratory tracer laboratory {= tracer lab} tracer level tracer material tracer--material tracer mechanism tracer method tracer milling tracer mineral tracer-- multiple tracer nuclides