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This paper discussed three methods of producting vinyl etherspreparation from acetylene, dehydrohalogenation and acetals.论述了乙烯基醚类化合物的三种主要制备方法乙炔法 、 脱卤化氢法和缩醛热分解法.Allene is an isomer of methyl acetylene.丙二烯是甲基乙炔的一种异构体.In th...
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liberality的音标：liberality的英式发音音标为：[ˌlɪbə'ræləti]liberality的美式发音音标为：[ˌlɪbə'rælɪti]...
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...the Government-funded body responsible for conserving historic buildings.政府资助的历史建筑保护机构...soil-conserving methods of good husbandry.优良畜牧业所采取的土壤养护法In colder weather, your cat will curl up into a tight, heat-conserving b...
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chuffing的音标：chuffing的英式发音音标为：['tʃʌfɪŋ]chuffing的美式发音音标为：[]...
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“堰”的拼音为：yàn...
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dull的反义词有：varied, brilliant, vivid, keen, interesting, bright, exciting, sharp, splendid, alert, poignant, brisk, smart, agile, shrewd, acute, clear, shining, funny。adj.dull的反义词（迟钝的;晦暗的;单调的）：varied, brilliant, vivid, kee...
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benzopyrene的音标：benzopyrene的英式发音音标为：['benzəpaɪri:n]benzopyrene的美式发音音标为：['benzəpaɪrin]...
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One factory has had to scale down its workforce from six hundred to only six.一家工厂不得不将员工人数从600名裁减至仅剩6名。Repeat the steps to create another scale down duplicate.继续重复上面的操作.Yet it has refused to scale down its ambitions.然而,它并...
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用木头和胶粘合的简单构造an insubstantial construction of wood and glue他用胶水把两块木头粘合起来.He joined two blocks of wood with glue.早期的飞行器是木头和胶粘合的脆弱机器.Early aircraft were insubstantial constructions of wood and glue....
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obey的反义词有：disobey, order, resist, revolt, disobey, command。vt.obey的反义词（服从;遵从）：disobey, order, resist。obey的反义词（其他释义）：revolt, disobey, command。...
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“牵胎钩”的英语可以翻译为：embryulcus ...
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淋巴毒血症...
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n.广肩小蜂科...
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“披”的英语可以翻译为：drape over one's shoulders，wrap around，open，unroll ...