reagentn.试药;试剂
reagent of sulfonyl chlorination酰氯化试剂
reagent for instrumental analysis仪器分析试剂
reagent for column chromatography柱层色谱试剂
reagent method of water-softening化学试剂软水法
reagent for non-aqueous ytitration非水滴定试剂
reagent and additive in polymerization[化] 聚合助剂