单词 | coal tar |
释义 | coal tar【化】 煤焦油【医】 煤焦油 coal tar coal tar n.(名词)A viscous black liquid containing numerous organic compounds that is obtained by the destructive distillation of coal and used as a roofing, waterproofing, and insulating compound and as a raw material for many dyes, drugs, and paints.煤焦油:一种粘性黑色液体,含有多种有机化合物,由煤的干馏获得,用作保护剂、防水剂、绝缘化合物,并作为许多染料、药品和油漆的原材料 |
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