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。
Any of various thick, dark, sticky substances obtained from the distillation residue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving.
沥青，人造沥青：某种厚厚的、黑而粘的物质，由炭焦、木焦或石油的剩余物中提炼出来，用于防水、盖屋顶、填缝和铺路。
Two methods of distillation crystallization method and gas chromatography to determine the naphthalene content in coal tar oil were introduced.
介绍煤焦油中萘含量测定的两种方法：蒸馏结晶法和气相色谱法，对两种方法的优缺点及分析结果进行了对比。
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