coal-tar
coal-tar 英 ['kəʊlt'ɑ:r] 美 ['koʊlt'ɑr]
n. 煤焦油
名词复数:coal-tars
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- n. 煤焦油
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1. Colorings made from coal-tar derivatives.
煤炭焦油所衍生出的色料。
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2. Here, the difference may be due to the elimination of coal-tar-derived ingredients used in the older products that are known carcinogens.
也许原因归于旧时产品中的衍生的煤焦油元素，它是一种致癌物质。
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3. According to the demands of the market, high quality reconciliation oil made from concoction of coal-tar oil and heavy-oil was also studied.
根据市场的需求，本文还研究了由煤焦油与重油调配成品质较高的合成燃料油。
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