ketal怎么读？

n.酮缩醇，缩酮...

Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.以单质碘为催化剂合成了环戊酮乙二缩酮.The effects of reactant mole ratio , catalyst dosage , microwave irradiationtimeyield of cyclohexanone glycol ketal were investigate...

“出牙”的拼音为：chū yá...

exploded的音标：exploded的英式发音音标为：[ɪk'spləʊdɪd]exploded的美式发音音标为：[ɪk'sploʊdɪd]...

dock的现在进行时为：docking...

The castle is set in 25 acres of beautiful grounds.这座城堡坐落于一片方圆25英亩、风景秀丽的土地上。He came insolently towards Mr. Won, his features set in a scowl.他傲慢无礼地朝元先生冲过来，面露怒容。The wound is festering, and gangrene has set in.伤口在溃烂，已经生了坏疽。...

“通知”的反义词：隐瞒。...

顿挫抑扬是形容朗读时声音的高低曲折和和谐的的节奏.Cadence means the rise and fall of the voice in reading with rhythm.他们的企图受到顿挫.They were baffled in their attempt.乐曲的主题音调采用切分节奏,富有极强的推动性,顿挫有致.This work employs a syncopated rhythm with a strong dr...

yesterday的复数形式为：yesterdays...

anaculture的音标：anaculture的英式发音音标为：[ə'nækltʃər]anaculture的美式发音音标为：[ə'nækltʃər]...

banana的复数形式为：bananas...

adv.有希望地，有前途地，抱有希望地...

adj.低压冻干法的...

How does crus open sexual fracture to accompany massive haemorrhage to do?小腿开放性骨折伴大出血怎么办?...a cerebral haemorrhage.脑溢血He said the move would definitely stem the haemorrhage of talent and enterprise from the colony.他表示这一举...

adv.最早就存在，最早就有，从最初，原来...

It would be wrong to continue out of perversity.为了故意作对而继续这样做是不对的。"I'm here to make them feel good," he says expansively.“我来就是让他们开心的，”他豪爽地说。She's marrying him out of sheer perversity.她嫁给他纯粹是任性....

reduce的现在进行时为：reducing...