Stearone glycol fumaric acid (SGF) was synthesized with maleicanhydride, cinnamyl alcohol and ethylene glycol.
由于烯二酸酐经醇解转型酯化对皮肤无过敏反应的反丁烯二酸桂醇甘醇酯(SGF)。
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Dr MacMillan found he could catalyse Diels-Alder reactions using a type of metal-free molecule called an imidazolidinone to activate the two-carbon component, meaning that it combines enthusiastically with its four-carbon compadre.
麦克米伦博士发现,他可以使用一种名为咪唑烷酮无金属分子来催化狄尔斯-阿尔德反应,以激活双碳成分,这意味着它可以与其四碳化合物结合。
Keyless entry, engine operation, anti-lock brakes, automatic transmissions, airbag systems, all of these are controlled with semiconductors, computer chips and one of the many strange ripple effects of the coronavirus pandemic is a global shortage of these chips.
无钥匙进入、发动机操作、防抱死刹车、自动变速器、安全气囊系统,所有这些都是由半导体和计算机芯片控制,疫情带来众多异常连锁反应之一就是这些芯片全球短缺。