We make superphosphate by reacting rock phosphate with sulphuric acid.
我們使磷酸鹽巖同硫酸發生化學反應制造過磷酸鈣.
?? 牛津釋義
phosphate
n
(a) [C, U] any salt or compound of phosphoric acid 磷酸鹽; 磷酸酯.
(b) [C often pl, U 作可數名詞時常作復數, 亦作不可數名詞]
any artificial fertilizer composed of or containing these 磷肥.