adj.傾斜下落的；倒栽蔥的；突如其來的
n.沉淀劑
With calcium chloride precipitant to eliminate the interference of PO43-, total nitrogen in compound fertilizer is determined by formol method. 用氯化鈣作沉淀劑，消除磷酸根離子的干擾，用甲醛法測(cè)定復(fù)合肥中的總氮。
