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An one-pot process including direct condensation of ethyl isodehydracetate and hydrocitronellal, followed by decarboxylation, isomerization and isomer resolution, was developed for practical preparation of ZR juvenile hormone analogue series with high con
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摘要以异脱氢乙酸乙酯与甲氧基香茅醛直接缩合为起点，将缩合、脱羧、异构化、（顺、反）异构体拆分等采用多步反应连续一锅法的操作方法，成功地得到高有效含量的ZR型保幼激素类似物。 |
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An one-pot process including direct condensation of ethyl isodehydracetate and hydrocitronellal,followed by decarboxylation, isomerization and isomer resolution, was developed for practical preparation of ZR juvenile hormone analogue series with high cont
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以异脱氢乙酸乙酯与甲氧基香茅醛直接缩合为起点,将缩合、脱羧、异构化、(顺、反)异构体拆分等采用多步反应连续一锅法的操作方法,成功地得到高有效含量的ZR型保幼激素类似物。 |
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An ongoing National Endowment for the Humanities and University of Virginia project.
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由「美国国家人文学科资助会」和「维吉尼亚大学」连手建立的项目，仍在进行中。 |
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An ongoing debate about the influences of nature versus nurture in shaping the behavior of girls and boys raises questions about whether the roles played by girls are the result of inborn differences or socialization.
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对于女孩和男孩的社会角色的形成和差别，始终存在著「先天决定论」（或基因决定论）与「后天决定论」（或环境决定论）的争论。 |
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An onion bulb; a tulip bulb.
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洋葱球；郁金香球根 |
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An onion will not produce a rose.
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洋葱里长不出玫瑰。/ 乌鸦里飞不出金凤凰。 |
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An online collection of Australian animation units in 2005.
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一个集合澳洲多位动画制作单位而成的网上结集。 |
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An online exam system framework was introduced in the paper.
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本文介绍了一个基于设计模式的网络考试系统框架. |
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An onlooker came up to the street vendor and asked, Tell me what will happen if I throw you spear at your shield.
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有个观众听了，走到小贩面前问道：“如果用你的矛去刺你的盾，又将会如何呢？” |
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An onlooker said he heard a loud noise from a transformer and then a flame emerged. All stores in the area had a power off for over two hours.
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一位目击者说，他听到变压器处传来一声巨响，然后出现一团火光。该区域内所有商店停电超过2小时。 |
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An onlooker said: The party seemed subdued at first but went off with a bang when David Beckham suddenly appeared.
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一位当事者说：派对气氛好像突然一下安静下来但是当发现是大卫贝克汉姆时蓦地一下变得轰动！ |
