详细解释:【计】 命令语言, 编译程序语言, 计算机语言, 控制线
【化】 中心线
英语解释：
名词 cl:
a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water)同义词：chlorine, atomic number 17