短語詞組短語tracer dilution method 釋義示蹤稀釋法tracer flow method 示蹤劑測哩isotope tracer labelling method 同位素標記示蹤法tracer response method 示蹤響應法tracer particles method 顆粒示蹤tracer loss method 示蹤劑損耗法Tracer gas method 示蹤氣躰法double tracer radioimmunoassay method 雙示蹤劑放射免疫分析法isotope tracer labeling method 放射性同位素標記示蹤法 返回 tracer method