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- Use lactose as the raw material, the (s)-3-hydroxybutyrolactone was obtained through reaction steps of decomposition, esterification, protection of function group, acidification. 摘要以乳糖为原料以分解酯化、官能团保护、酸化制得目标化合物。
- protection of functional group [化] 官能团的保护
- The advancement of selective mono functional group protection of dihydric alcohol in recent years was reviewed with 21 references. 本文综述了近年来有机合成中二元醇类化合物的选择性单官能团保护的研究进展。
- Changes of function group in enzymatic deinking of mixed office waste pap er were studied through infrared spectra. 通过红外光谱分析讨论混合办公废纸酶脱墨过程纤维组分特征官能团的变化。
- In addition,The resistance to weathering,chroma and compatibility of C5 petroleum resin could be improved by introduction of functional group and utilization of hydrog... 另外,采取引入官能团、进行加氢等方法也有助于改善C5石油树脂的耐候性、色度和相容性。
- Amidoxime resin is the best uranium absorption material in the sea water due to its special structure of functional group and excellent absorption property. 偕胺肟型螯合树脂以其特殊的官能团结构、优良的吸附性能而成为从海水中提取铀的最佳材料。
- The Investigation of Functional Groups in Chla by Molecule Modification[J]. 引用该论文 李颖;郑荣儿;苗洪利;王荣;孟继武.
- He's devoted his whole life to the protection of the rare animals. 他终生献身于珍稀动物的保护。
- Applications of functional group polysiloxane in daily chemical products are introduced.In addition, the development trend and research direction of functional polysiloxane are forecasted. 介绍了带功能基的聚硅氧烷在日化产品中的应用情况,并对其发展动向进行了预测。
- The results indicate that the stronger the chemical activity of functional group in self-assembled molecules is, the more remarkable the SAMs cluster topography characteristics are. 结果表明：自组装分子末端官能团的化学活性越强，形成的自组装分子膜的团簇特徵越显著；
- The ships required the protection of naval and air power. 船只本身需要海军和空军的保护。
- According to peak area of function group in FTIR spectroscope, the different conversion time curves of [SiH] and [CH=CH2] during the reaction process were got and its reason was presented reasonably. 结果表明，在反应过程中，硅氮基与乙烯基的浓度减少呈非线性关系，这可能是硅氮基在反应过程中与空气中的物质进行了反应，从而在消耗量上较乙烯基多的缘故。
- Every citizen may claim the protection of the law. 每一公民均可要求法律的保护。
- Oxidation reaction is an important method for the conversion of functional groups in aromatic compounds. 氧化反应是对芳香族化合物进行官能团转化的重要方法之一。
- Lacking the protection of insurance or collateral security. 未经保险的未发保险的，无附加担保的
- Labor protection of (3) labor group checks employee to make byelaw. 工会小组劳动保护检查员工作条例。
- Wettability improvement is due to surface roughness and introduction of functional groups including oxygen and nitrogen. 增加表面粗糙度和引入含氧、含氮高结合能官能团是改善材料表面润湿性的主要原因。
- The minister has to attend all kinds of functions. 部长必须参加各种集会。
- Covalent micelle derived from hyperbranched polymer can be synthesized in large scale with high population of functional groups (FGs) left in the core. 由超支化聚合物衍生制备共价胶束可以大规模进行，所得胶囊内部还残留有大量官能团。
