a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
calcium-的用法和樣例:
例句
The pulp could affect the formation of calcium soap particles and reduce the pitch deposition. 紙漿的存在影響到鈣皂粒子的生成以及聚集過程從而減少樹脂沉積。