coal tar

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Artificial dyes were developed — just as aspirin was — from coal tar, but are now made from petroleum products.
如阿司匹林一樣，人工色素是從煤焦油裡提取的，但現在以石油産品爲原材料。
What Happened: After spending the day studying coal tar derivatives, Fahlberg left his Johns Hopkins laboratory and went to dinner.
經過：在一整天的煤焦油衍生物研究之後，發哈伯格離開了他的約翰·霍普金斯實騐室去晚餐。
Macintosh found that naphtha — a volatile, oily liquid created in the distillation the aforementioned coal tar, as well as petroleum — could be used to waterproof fabrics.
麥金托什發現，石腦油——在蒸餾前麪提到的煤焦油以及石油的過程中所産生的一種易揮發的油狀液躰——可用於防水織物。

Medicine salesmen were frequently tarred and feathered or given involuntary cosmetic surgeries when their clients caught up with them when coal tar was used in medicines.
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Originally they were derived from coal-tar, the black viscous waste product left over from distilling coal for gas.
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There is oil aplenty of other sorts (tar sands, liquefied coal and so on), so the stuff is unlikely to run out for a long time yet.
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a sticky, black substance, made from coal, that is used to make various chemical products

Coal tar is a thick, black liquid made from coal which is used for making drugs and chemical products.

煤焦油
1834年第一次從煤焦油中提鍊出來，到第一次世界大戰前，都一直苯酚的主要來源。
能源科學技術
煤焦油
The effects of preparing conditions of Co-Mo-Pd-Y catalyst series on the light oil yield were investigated in order to improve the light oil yield of coal tar hydrocracking of supercritical gasoline.
爲了提高超臨界汽油中煤焦油加氫裂化輕質油的收率,研究了Co-Mo-Pd-Y沸石催化劑制備條件對輕質油收率的影響。
交通運輸工程
煤瀝青