1835, from French méthylène (1834), coined by Jean-Baptiste-André Dumas (1800-1884) and Eugène-Melchior Péligot (1811-1890) from Greek methy "wine" (see mead (n.1)) + hyle "wood" + Greek name-forming element -ene. So called because detected in wood alcohol. "The breakdown of methylene into methyl and -ene, and the identification of the last syllable of methyl with the general suffix -ly, led to the use of meth- as a separate combining-element, as, for example, in methane, methacrylic" [Flood].
实用例句
1. Kodak company describes open chain reactive methylene two - equivalent yellow - forming conplers.
柯达叙述了一种直链的活性亚甲基两当量的黄成色剂.来自辞典例句
2. The reactor and transfer line are rinsed with several small portions of methylene chloride.
反应器和输送管线被用少量二氯甲烷洗涤几次.来自辞典例句
3. One of the hydrogen atoms of the active methylene group is replaced with a cyclooxy group.
活性亚甲基上的一个氢原子是被环氧基所取代的.来自辞典例句
4. Do you bring the Retort Kit, Methylene Blue Kit to the platform?
你带了固相蒸馏仪和亚甲基蓝测试仪到平台上 吗 ?来自互联网
5. The rods are seen here with a methylene blue stain.
