coal tar
coal tar
n. 煤焦油
名词复数:coal tars
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- n. 煤焦油
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1. Artificial dyes were developed — just as aspirin was — from coal tar, but are now made from petroleum products.
如阿司匹林一样，人工色素是从煤焦油里提取的，但现在以石油产品为原材料。
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2. What Happened: After spending the day studying coal tar derivatives, Fahlberg left his Johns Hopkins laboratory and went to dinner.
经过：在一整天的煤焦油衍生物研究之后，发哈伯格离开了他的约翰·霍普金斯实验室去晚餐。
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3. 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.
麦金托什发现，石脑油——在蒸馏前面提到的煤焦油以及石油的过程中所产生的一种易挥发的油状液体——可用于防水织物。
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