音标:['meθilæl, ,meθi'læl] ;
n. [化]甲缩醛,甲醛缩二甲醇,二甲氧基甲烷
n. A light, volatile liquid, H2C(OCH3)2, regarded as a
complex ether, and having a pleasant ethereal odor. It is obtained by
the partial oxidation of methyl alcohol. Called also formal.

methylal的用法和样例:

例句

用作名词(n.)
  1. The present invention relates to a catalyst for methylal oxidation to prepare formaldehyde ferrimolybdenum.本发明涉及一种甲缩醛氧化制浓甲醛铁钼催化剂及其制备方法,属于催化剂技术领域。

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发表于:2018-12-24 / 阅读(64) / 评论(0) 分类 Scientific American(六)月

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M Madasiatic acid 崩大碗酸 Magnoflorine 木兰花碱 Magnolia cortex P.E 厚朴提取物 Magnolol 厚朴酚 Maitake mushroom P.E 灰树花提取物(舞茸提取物) Malonyl Oleanolic acid Hemi

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发表于:2019-01-06 / 阅读(88) / 评论(0) 分类 农业与发展

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(67) / 评论(0) 分类 VOA2003(下)-环境与健康

Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

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