碳質(zhì)物

I want two carbons for our files. 我要兩份復(fù)寫本存檔。

I make a carbon copy of my documents. 我用復(fù)寫紙復(fù)寫文件。

Soft drinks contain carbon dioxide. 軟飲料中含有二氧化碳。

I have some carbon paper somewhere or other. 我記得我在什么地方放有復(fù)寫紙。

She's a carbon copy of her sister. 她跟她姐姐一模一樣。

A copy made by using carbon paper. 復(fù)寫本，副本用復(fù)寫紙復(fù)印的一份

烴類

n.氟化碳