重 点
Carbon is a chemical element that diamonds and coal are made up of. (化学元素) 碳
noun [专属名词] 碳；复写纸；炭精棒；碳纤维
Carbon has a valency of 4. 碳的化合价是4价。
adjective [原级] 碳的，碳处理的
Carbon steels exist in three stable crystalline phases. 碳素钢含有3种稳定的结晶状态.
car+bon(看作born)→汽车产生的废气→二氧化碳→碳
- 网友用 “Carbon” 造句精选
- CO is the formula for carbon monoxide. CO是一氧化碳的分子式。