their research aims to include how specific gene activity and soil fertility govern plant development.

the physical and mechnical properties of the sample injected are depend on 1, 4-cyclohexanedimethanol content.

共聚酯注塑样品的物理和机械性能指标受1, 4- 环己烷二甲醇加量影响.

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the synthetic process and application cyclohexyl chloride are introduced.

介绍了氯代环己烷的合成工艺及其应用.

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it indicates that the different chemical construction contribute to the dna sequence characteristic differently.

这表明不同的化学结构对DNA序列特征具有不同的贡献.

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the answer may lie in the chemistry of the brain and nervous system.

答案可能要到大脑和神经系统的化学结构中去找.

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their structures assigned by a combination of one-and two-dimensional nmr techniques.

化学结构用一维和二 维 核磁共振技术确定.

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hydrocarbons to be chemically altered to make useful products and materials.

碳氢化合物需改变化学结构,方能制成有用的产品或物料.

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with chemical structure theory the authors approached the property similarity of chemical elements from different angles.

运用物质结构理论,多角度从“垂直”、“水平”、“对角”、“离子”、“等电子体”、“单电子体”等方面探讨化学元素性质相似性.

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it is the chemical structure of water that makes it an excellent medium for life.

是水的化学结构使它成为绝佳的生命存在的介质.

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their electron absorption spectra were determined. photostability has been investigated in relation to the chemical structure.

测定了它们的电子吸收光谱,讨论了结构对光稳定性的影响.

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on the basis of the chemical structure of daidzein, a series of isoflavones have been synthesized.

在黄豆甙元化学结构的基础上, 合成了一系列异黄酮衍生物.

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relationship of chemical structure and bioactivity about sulfate polysaccharides is summarized.

综述了国内外关于硫酸多糖结构与活性关系的研究进展.

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the chemical structure of water makes it an excellent medium for life.

水的化学结构使它成为极好的生命介质.

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the unusual properties of this molecule stem from its unique chemical structure.

这个分子的独特性质源于其不寻常的化学结构。

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non-formaldehyde finishing of cotton with glyoxal and the properties of the treated product are discussed.

主要讨论乙二醛作为棉织物无甲醛整理的工艺和整理品的性能.

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glyoxylic acid was rapidly synthesized by controlled oxidation of glyoxal ) with oxygen ) in acid medium.

在酸性介质中,用氧气氧化乙二醛溶液,可快速合成乙醛酸.

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there are several routes to produce glyoxal and the purification techniques are somewhat different.

乙二醛有多种生产方法,其纯化对象亦有所不同.

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The results showed that the catalyst combined with diethyl phosphite ( DEP) exhibited the highest activity in isoprene polymerization in hexane at relatively high temperature ( 50 ℃).

结果表明，以亚磷酸二乙酯（DEP）为第三组分的催化体系，在己烷中于相对较高温度（50℃）下的催化活性最高。

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Glycine dimethyl phosphoric acid ( GDMP) has been synthesized with glycine, formaldehyde and diethyl phosphite as main raw materials.

以甘氨酸、甲醛、亚磷酸二乙酯为主要原料，合成甘氨酸二亚甲基膦酸（GDMP）。

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The phosphorus and formaldehyde free flame retardant FRC-P was prepared by two steps reaction with diethyl phosphate, acrylamide and glyoxal. Its chemical structure was confirmed by infrared spectroscopy.

以亚磷酸二乙酯、丙烯酰胺和乙二醛为原料，经过两步反应合成了磷系无甲醛阻燃整理剂FRC-P，采用红外分析确定了该阻燃剂的结构。

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Synthesis Process of Diethyl Phosphite in the Absence of Organic Solvent

无溶剂法合成亚磷酸二乙酯

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