isomer

noun

1. 异构体；同分异构体
   one of two or more compounds which have the same atoms, but in different arrangements
2. 同核异能素；同质异能素
   one of two or more nuclei that have the same atomic number , but different energy states

1. Allene is an isomer of methyl acetylene.
   丙二烯是甲基乙炔的一种异构体。
2. Proceed as directed in the Optical Isomer, the retention time of the major peak of the test solution corresponds to that of the reference solution of Levofloxacin.
   照光学异构体检查项下方法试验，供试品溶液主峰的保留时间应与对照品溶液左氧氟沙星峰的保留时间一致。
3. The term "normal" applies to the isomer that has all its carbon atoms linked in a straight chain.
   对这类异构体采用正构一词是因为这类异构体的全部炭原子都以直链形式连在一起。
4. Experimental Research on Understanding and Problem Solving of the Isomer Concept
   同分异构体概念的理解与相关问题解决的实验研究
5. The information was obtained on monomeric isomer distribution of PMR polyimide resin solution and purity of prepared materials.
   并对树脂单体材料的纯度以及PMR型树脂溶液中的单体及单体异构体成分进行了分析。
6. It is necessary to find an effective method to separate isomer from the mixture to enhance the efficiency and extra value of the product.
   目前采用吸附分离的模拟移动床工艺来分离提纯混合二甲苯的单组分异构体，是一种有效的方法，从而可以提高产品附加值和资源利用率。
7. Based on the online approval system of the administrative service center, the design and realization of the isomer data exchange pattern was discussed.
   以行政服务中心的网上审批系统为例，讨论了异构数据的交换模式设计与实现。
8. Isomer: One of two or more substances with identical molecular formulas but different configurations, differing only in the arrangement of their component atoms.
   同分异构体：亦称异构体。分子式相同但构型不同的两种或两种以上的物质，其差别只在于组成原子的排列不同。
9. It occurs in fruits, honey, syrups ( especially corn syrup), and certain vegetables, usually along with its isomer glucose.
   与葡萄糖共存于果汁、蜂蜜、糖浆（尤其是玉米糖浆）及某些蔬菜。
10. In vitro studies with analogs related to ENMD-1420 showed that the Z isomer is more potent than the E isomer for antiproliferative activity.
    与ENMD-1420相关的类似物体外研究显示在抗增殖活性方面Z异构体强于E异构体。
11. Meanwhile synergistic inhibition effect was observed in the form of mixture of two citral isomers compared with the effect of isomer.
    二者混合物的抗菌总活性与单体相比表现出一定程度协同性；
12. An isomer of glucose that is found in honey and sweet fruits.
    葡萄糖的一种异构体，见于蜂蜜和甜水果中。
13. Study on the Isomer of Thymosin α 1 for the Synthesis and Pharmacodynamics
    胸腺素α1异构体的合成及主要药效学研究
14. Werner's method was that used previously by organic chemists to elucidate the structures of substituted benzenes, namely isomer counting.
    沃纳所用的方法是从前有机化学家用来阐述取代苯结构的方法，即异构体计算法。
15. An orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver.
    一种不饱和碳氢化合物的橙色异构体，见于许多植物中，在肝脏中转化为维生素A。
16. An isomer of amphetamine ( trade name Dexedrine) used as a central nervous system stimulant.
    安非他明的异构体（商品名Dexedrine）被用作中枢神经刺激物。
17. Four kinds of isomer were synthesized with cyanuric chloride as row material, and characterized by the IR spectrum and Ms. He was something serious in the beginning.
    以三聚氯氰为起始原料合成了四种三嗪衍生物，并用红外光谱和质谱分析法对它们进行了表征。他一开始也是个了不起的人物。
18. The most likely alternative structure, the tetrahedron, would produce only one isomer for this composition.
    在这种情况下，最可选的结构是四面体，并且对于这个化合物将只产生一个异构体。
19. Abstract: A high performance liquid chromatography ( HPLC) method for determing the 2,4-/ 2, 6-isomer ratio in commercial. toluene diisocyanate ( TDI) was developed.
    文摘：建立了测定工业甲苯二异氰酸酯中2，4-和2，6-体异构比的液相色谱法。
20. The method established can be used in study of chiral isomer of the two drugs.
    所建立的手性分离方法可用于盐酸曲马多及盐酸氯吡格雷的手性研究。
21. Relationship between the molecular structure and gas chromatographic retention index of alcohol isomer
    醇类异构体气相色谱保留指数与分子结构的定量关系
22. In this way, all the substrates could be converted into a single product isomer with a100% theoretical yield.
    动态拆分技术在理论上可以获得产率100%的光学纯的单一对映异构体。
23. Determination of ( R, S)-Isomer in Palonosetron Hydrochloride Injection by NP-HPLC
    盐酸帕洛诺司琼注射液中异构体含量的NP-HPLC测定
24. The dimer and isomer of NAA has been found as the main products arised from these radical groups.
    这些自由基又进一步反应形成了主要的产物，包括萘乙酸二聚体和萘乙酸的异构体。
25. Although Werner worked carefully and examined many systems, there was always the possibility, admittedly small, that the third isomer had escaped his detection.
    尽管沃纳工作认真，并且检查了许多体系，第三种异构体没被他发现的可能性，已被公认是很小的。
26. A high performance liquid chromatography ( HPLC) method for determing the 2,4/ 2,6 isomer ratio in commercial.
    建立了测定工业甲苯二异氰酸酯中2,4-和2,6-体异构比的液相色谱法。
27. This paper introduced two separation methods of xylene isomer, e. g. industry's and laboratory's in detail.
    详细介绍了二甲苯异构体分离的工业化与实验室方法，与工业化法相比，实验室方法能在常温常压下分离邻、间、对三异构体。
28. The influence of solvents on ratio of isomer was investigated in detail.
    较详细地研究了六种溶剂：1,2-二氯乙烷，二硫化碳，四氯化碳，环已烷，正己烷，氯苯对产物异构体邻对比例的影响。
29. Objective:: To establish method for separating chiral isomer of tramadol HCl and clopidogrel HCl.
    目的：建立盐酸曲马多和盐酸氯吡格雷2种手性药物的分离方法。
30. The content of R-isomer was determined with the mobile phase of acetonitrile-water ( 40 ∶ 60).
    R-异构体的含量测定采用乙腈-水（40∶60）为流动相。

noun

1. a compound that exists in forms having different arrangements of atoms but the same molecular weight