钙 Stroke Order

钙 鈣 gài 名词 1. A metallic element, silver-white crystalline, and ductile. Calcium compounds are widely used in industry, construction, and medicine. 2. A relatively soft, silver-white, divalent metal element of the alkaline earth group that quickly loses its luster in air and burns with a bright flame when heated. It is mainly used in alloys and various metallurgical processes and is often used as a clarifying agent. In nature, it does not exist independently and typically exists in a compound state in certain minerals and rocks, especially in the form of carbonates (such as limestone), sulfates, or phosphates in natural water and most plants and animals, constituting a basic component of them (English: calcium) — atomic symbol Ca. For example: calcium deficiency; calcification.