under是什么意思(精选4篇)

under的用法大全： 篇1

under的用法1：under表示静止的空间位置时，意思是在的正下方;在的下面;； 也可指在某物的脚边或底下，即在底下;在脚下;； 还可指在人身体某部位之下； 有时还可引申表示在遮蔽〔保护〕之下;。

under的用法2：under表示状态作被遮盖;（在职位、权势等方面）低于或隶属于;经受着;解。

under的用法3：under表示方式指身份和行为的假托，作凭借;解； 表示环境作在情况下;解； 表示法规、条例的依据作根据，按照;解。

under的用法4：under还可表示骑马，乘船;。还可表示类属，作属于;归于之下;解。

under的用法5：under还可以表示所处的状况、条件或在进行的过程中，意思是在（状态）中;在（情况）下;。

under的用法6：under还可以表示数量，价格，年龄等，意思是不足;不到;以下;。under也可表示时间，意思是在（较短的）时间内;。

under和below的区别 篇2

under表示状态作“被…遮盖”“（在职位、权势等方面）低于或隶属于”“经受着”解。

under表示方式指身份和行为的假托，作“凭借”解； 表示环境作“在…情况下”解； 表示法规、条例的依据作“根据，按照”解。

Under the Rose 篇3

例句：

They feel under permanent threat、

他们感觉处在持续不断的威胁之下。

She dived under the water、

她潜入水下。

If it's not under 'sports', try looking under 'games'、

如果在“体育运动”项下查不到，就试试“游戏”项吧。

under的用法总结 篇4

Toposelective synthesis under thermodynamic control and bioactivities of topoisomers based on diethoxycarbonyl glycoluri

Six topoisomers consisting of diethoxycarbonyl glycoluril have been successfully synthesized in one-pot by using a “figure-of-seven” building block through anti-connectivity and syn-connectivity reactions, respectively、 The structures of all six topoisomers were first determined by X-ray crystallography、 The finding that (±) CT isomers are the dominant products under thermodynamic control can be explained by the calculated relative energies of the six topoisomers、 That the (±) CT isomers have the lowest energy is most likely due to the additional intramolecular electrostatic interactions between -NO2 and -OMe groups、 The biological activities of the topoisomers were primitively investigated and the results of bioassay showed that the six topoisomers possessed obvious difference of herbicidal activity、

作 者：ZHOU Baohan YIN Guodong WANG Zhiguo CHEN Yunfeng WU Anxin WAN Jian  作者单位：Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China 刊 名：科学通报（英文版）  SCI英文刊名：CHINESE SCIENCE BULLETIN 年，卷(期)：2006 51(17) 分类号：O4 关键词：biological activity   thermodynamic control   topoisomer   toposelective synthesis