什么是DR和ER

发布网友 发布时间：2022-04-20 13:49

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热心网友 时间：2023-07-12 22:02

　　dr与ee值
　　对于具体到某一个不对称合成来说，如果产物只有一个手性中心，在用高效液相量化其对映选择性的时候，如果不是100％光学纯，则会出现两个对映异构体的峰，峰面积的比值是er,即 enantiomeric ratio. 两个峰面积的差值就是ee值，即enantiomeric excess.如果产物有两个或者两个以上的手性中心（一般是两个，再多就太复杂了），峰面积的比值是diastereomeric ratio,两个异构体的差值则是diastereomeric excess。

　　缩写
　　DR = Data Register ，数据缓冲寄存器
　　DR = Design Review ，设计评审，常用于“DR会议”，即设计评审会议
　　DR = Defect Record，错误履历
　　DR = Dead Reckoning 完全估算
　　DR= Dong Ruan 东软，拼音缩写，东软员工为了避讳东软这个词被公司过滤，很多人就是用dr。
　　DR=Dividend Right 证劵 证券代码前标上DR，表示除权除息，购买这样的股票不再享有送股派息的权利。
　　Dr= Doctor，医生（亦可作博士）
　　DR=Drow Ranger 黑暗游侠。
　　DR=Directed Retry 定向重试（用于GSM移动通信中。例如：在 NOKIA设备中，在呼叫建立阶段，如果某小区话音信道拥塞，我们可以通过 Directed Retry（DR）功能来减少本小区拥塞。）
　　DR=Depository Receipts,存托凭证
　　DR=Defender Right 足球术语，右边后卫，同Right Guard。
　　DR=debit record，财务凭证中的借记
　　DR=Draft Resolution，决议草案，是“决议案(Resolution)”的草案，简称DR，通过即成为合法的国际条例或约定，影响全世界。而DR 也是模联会议的最终结果，因此具有非常重要的地位。

　　Er英文缩写 ER = Emergency Room，急诊室。
　　ER，美国全国广播公司著名的电视连续剧的名称，中文名称为： 《急诊室的故事》。1994年开播，最后一集在2009年4月2日结束。
　　ER，医学名词，内质网的缩写.
　　雌激素受体缩写，estrogen receptor.
　　ER，employee relations,员工关系的缩写。ER是HR （人力资源）部门中的一个组成。
　　ER英语语气词，同EH， (表示疑问,怀疑,或征求同意时所发的声音)啊!嗯!是吗?好吗?
　　ER，Erbium，铒，化学元素，由莫桑德尔在1843年于瑞典发现，得名于瑞典村庄Ytterby。相对原子质量167.2，是柔软有延展性的银白色金属。

热心网友 时间：2023-07-12 22:03

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