名词 coal tar:
a tar formed from distillation of bituminous coal; coal tar can be further distilled to give various aromatic compounds
- They will report on the experiments with coal tar.
- Obtained by distilling coal tar.
- Indole consists in washing oil of coal tar.
- Coal tar has a strong smell and can stain clothing.
- Our company ranks first in the output of coal tar.
- Ammonia, coal tar and coke are all by-products obtained in the manufacture of coal gas.