coal tar
短语[化] 煤焦油 [医] 煤焦油
词形变化
coal tars
复数
释义与例句
n.
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1.
A black, viscous tar made by the destructive distillation of coal (to make coke and town gas); it contains a great number of compounds including hydrocarbons and phenols; used in the preparation of medicinal soap and shampoo, and industrially for the manufacture of many products.
煤焦油
可数 不可数