常見例句Unless reagent grade sucrose is available use cane sugar.如果沒有試劑級(jí)的蔗糖，可以用甘蔗糖。Reagent pure phosphato-tungstic acid was prepared by reacting sodium tungstate with dis-odium hydrogen phosphate and acidifying with hydrochloric acid.由鎢酸鈉與磷酸氫二鈉反應(yīng)，再經(jīng)鹽酸酸化制得了試劑級(jí)的磷鎢酸。 返回 reagent-grade