“coal、tar”的英文意思_释义_用法

单词

coal-tar

释义

coal-tar
A thick black viscid liquid, which is one of the products of the destructive distillation of bituminous coal. It is a compound of many different substances, chiefly hydrocarbons; and out of its constituents are obtained paraffin, naphtha, benzene, creosote, the aniline or coal-tar colours, etc.
1785A. Cochrane (title), Account of the qualities and uses of Coal Tar, and Coal Varnish.1823J. Badcock Dom. Amusem. 77 Coal-tar Gas..is the common gas, so much in use in all towns of any consequence in this empire.1840R. Dana Bef. Mast xxxv. 134 Ringbolts..were blackened with coal-tar.1868–77Watts Dict. Chem. V. 670 The more volatile portion of coal-tar, called light-oil or coal-naphtha, consists mainly of benzene and its homologues..Coal-tar has also acquired great value as the source of aniline-colours, and of phenol, picric acid, etc.

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