butyln.
英 'bjuːtaɪl; -tɪl | 美 'bjʊtɪl
中文n. 丁基；丁基合成橡胶
词根词源
butyl (n.)hydrocarbon radical, 1868, from butyric acid, a product of fermentation found in rancid butter, from Latin butyrum "butter" (see butter (n.)).
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