英语词汇“pyran”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pyran
释义	Trends of pyran View usage for: pyran in British English (ˈpaɪræn, paɪˈræn) noun an unsaturated heterocyclic compound having a ring containing five carbon atoms and one oxygen atom and two double bonds. It has two isomers depending on the position of the saturated carbon atom relative to the oxygen Word origin C20: from pyro- + -an pyran in American English (ˈpaɪˌræn; paɪˈræn) noun any of a group of closed-chain compounds containing a ring, C5H6O, of one oxygen atom and five carbon atoms Word origin pyrone + -an
随便看	break something up break step break the back of break the back of something break the bank break the fourth wall break the glass plan break the ice break the internet break the mold break the mould break through breakthrough breakthrough bleeding break through something breaktime break up break-up breakup break-up value breakwall breakwater break wind break with break with something or someone

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Trends ofpyran