煤焦是煤发生热解反应后的产物，相当于高变质程度的煤，然而却又比煤活泼，不同的煤焦，用途不同。
煤焦油 tar oil ; pix carbonis ; Coing Tar ; coal tar
煤焦油沥青 coal tar pitch ; coal tar asphalt ; Asphalt ; Bitumen
煤焦油染料 [染料] coal tar dye ; coal tar dyestuff ; coal-tar dyes ; tar colours
环氧煤焦油 coal-tar epoxy ; tar epoxy ; epoxy coal tar
环氧煤焦油漆 coal tar epoxide paint ; epoxy-coal tar paint
泓利煤焦 SCOK
煤焦油环氧树脂 coal tar epoxy resin
他试图用苯胺批量制造奎宁，苯胺是一种廉价且容易获得的煤焦油废料。
He was attempting to manufacture quinine from aniline, an inexpensive and readily available coal tar waste product.
煤焦油是伦敦煤气道路照明几乎无限的副产物，利用便宜量大的煤焦油，染厂于1857年开始生产世界上第一种合成染色材料。
Utilising the cheap and plentiful coal tar that was an almost unlimited byproduct of London's gas street lighting, the dye works began producing the world's first synthetically dyed material in 1857.
重庆煤焦油泄漏污染河流。
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