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汉语拼音：tóng fēn yì gòu tǐ

指化合物中分子式相同，但结构和性质不同的一种现象。可分结构异构、立体异构两大类。前者如正丁烷、异丁烷、异氰酸银、雷酸银，后者如顺丁烯二酸、反丁烯二酸等。

同分异构体 [tóng fēn yì gòu tǐ]

• High speed countercurrent chromatography(HSCCC) was successfully used for the separation and preparation of isomeric compounds.

  应用高速逆流色谱法对同分异构体。分离纯化进行研究。

• Similarly, the emission intensity of alkaline elements can be affected by isomers or variation of the. . .

  有机物同分异构体以及官能团数量上的差异也对碱金属元素的发射强度产生影响，其影响规律也不相同。

• Residues of hexachlorocyclohexane isomers in human milk of two population from beijing and shenyang, china were studied.

  中国正在北京和沈阳两个城市进行关于六氯化苯同分异构体在人类乳汁中含量的研究。

• Isomerism is very important because enzyme specificity restricts viable organisms to the use of only one of the TWO forms.

  异构现象是非常重要的，因为酶的特异性限制生物体都只能使用两种同分异构体中的一种。

• The optimum gas chromatographic analysis condition of determining trichlorobenzene isomer content was obtained.

  得到了测定三氯苯同分异构体含量的最佳色谱分析条件。

• Any of various isomeric paraffin hydrocarbons with the formula C8H18, found in petroleum and used as a fuel and solvent.

  辛烷一种具有这种分子式的同分异构的石蜡氢碳化合物，此式为c8h18，在石油中发现，用作燃料和溶剂。

• Galactose A sugar found in lactose and many polysaccharides . It is an aldohexose , isomeric with glucose . See also sugar.

  是存在于乳糖和多糖中的一种六醛糖，为葡萄糖的同分异构体。参见。

• Any of three colorless, flammable isomeric hydrocarbons, C5H12, derived from petroleum and used as solvents.

  戊烷有三种同分异构体的无色可燃烷烃，c5h12，从石油中提炼，可用做溶剂。

• Finally, the reason for stereo-isomer variation of cholestane in different depths and abundances are explained.

  最后解释了生物标志化合物胆甾烷的立体同分异构体不同深度丰度变化的原因。