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].
雙語例句
1. Kodak company describes open chain reactive methylene two - equivalent yellow - forming conplers.
柯達敘述了一種直鏈的活性亞甲基兩當量的黃成色劑.
來自辭典例句
2. The reactor and transfer line are rinsed with several small portions of methylene chloride.
反應(yīng)器和輸送管線被用少量二氯甲烷洗滌幾次.
來自辭典例句
3. One of the hydrogen atoms of the active methylene group is replaced with a cyclooxy group.
活性亞甲基上的一個氫原子是被環(huán)氧基所取代的.
來自辭典例句
4. Do you bring the Retort Kit, Methylene Blue Kit to the platform?
你帶了固相蒸餾儀和亞甲基藍測試儀到平臺上 嗎 ?
來自互聯(lián)網(wǎng)
5. The rods are seen here with a methylene blue stain.