hydroxymethyl的例句大全

Study on the Synthesis of Hydroxymethyl-15-Crown-5 from Tetraglycol and Epichlorohydrin by two Steps

用四甘醇和环氧氯丙烷两步合成羟甲基-15-王冠-5的研究

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The principle and test conditions of the determination of hydroxymethyl index for phenolic resin by infrared spectroscopy were introduced.

介绍用红外光谱法测定酚醛树脂羟甲基指数的原理和实验条件。

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With a long, thin bladed knife, cut a five or six-sided opening out on the top of the pumpkin around the stem. Comparison of Gallic Acid and 5-Hydroxymethyl Furfural Between Traditional Slice Decoction and Dispensing Granule Decoction of Siwu Tang

用细长的刀子延著南瓜蒂切割出一个五角形或六角形的盖子，再使用大汤匙刮除果肉。四物汤饮片与配方颗粒汤剂中没食子酸、5-羟甲基糠醛含量比较

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It was proved that 70% of formaldehyde molecule transformed into hydroxymethyl ureas and another 25% of formaldehyde molecule formed methylene-ether bond in the initial alkaline reaction stage.

结果表明：在初始碱性阶段有70%的甲醛分子转化成了羟甲基脲，25%的甲醛分子转化成了亚甲基醚键。

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Extraction in dioxane indicated that the hydroxymethyl lignin took part in the solidification reaction of novolac.

二氧六环抽提结果表明，羟甲基化木质素参与了固化交联反应。

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The zirconia-coated capillary exhibits the switchable EOF whose direction and magnitude are strongly dependent on the properties of nonaqueous solvents composition, their apparent pHs ( pH), and the electrolytes used ( hydroxymethyl aminomethane and ammonium acetate).

二氧化锆涂层毛细管表现出双向电渗流，其方向和大小都和体系的性质有关，如pH~，溶剂组成，电解质（Tris和醋酸铵）。

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IR Spectra at Various Temperatures for Tris ( hydroxymethyl) aminomethane

三羟甲基甲胺固-固相变的变温红外光谱研究

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Determination of proton dissociation constant of tris-( hydroxymethyl)-aminomethane by NMR method

用NMR方法测定三羟甲基胺基甲烷的质子解离常数

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Ammonium sulphate and tris-( hydroxymethyl)-aminomethane ( Tris) were employed as a chemical modifier.

用硫酸铵和三羟甲基氨基甲烷（简称Tris）作为化学改进剂。

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The chloromethylation reaction consists of electrophilic substitution reaction and nucleophilic substitution reaction, the nucleophilic substitution is the rate-controlling step and the hydroxymethyl cation (+ CH20H) is the really effective electrophile.

氯甲基化反应由亲电取代反应和亲核取代反应组成，亲核取代反应是反应的速率控制步骤，羟甲基碳正离子（+CH2OH）；是真正有效的亲电试剂。

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In this research work, the self-thickening polybasic acrylic co-polymerization emulsion was synthesized by the technique of semi-continuous emulsion polymerization with acrylic acid, acrylic acid ester and N-hydroxymethyl acrylamide as raw materials, OP-10 together with K12 as compound emulgent.

以丙烯酸、丙烯酸酯以及N-羟甲基丙烯酰胺为原料，OP-10和K12为复合乳化剂，用半连续乳液聚合工艺合成了自增稠多元丙烯酸酯共聚乳液。

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Determination of 5-hydroxymethyl-furfural in root of Achyranthes bidentata expressing different degree of floating sugar

泛糖程度不同的牛膝中5-羟甲基糠醛含量测定

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hydroxymethyl furfural (5-hmf) is an index compound for beer stalking .

由于5-羟甲基糠醛对啤酒老化所具有的指示作用。

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chelate reaction between borate ions and phenol hydroxyl group, ortho-position hydroxymethyl group of phenol-formaldehyde resol resin

硼酸根与甲阶酚醛树脂中酚羟基和邻位羟甲基的螯合反应

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the product has the active hydroxymethyl group on the cycle, and combines easily with some polymers to prepare three phase catalyst ( tpc).

产品环上具有活泼之羟甲基，所以它很容易同某些高聚物相结合，制成三相催化剂（TPC）。

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ft-ir and 13c nmr show that the amount of hydroxymethyl group was increased after hydroxymethylation reaction and reduced with increasing the amount of lignin.

红外光谱和核磁共振谱表明：木质素经羟甲基化反应后，羟甲基含量有所增加，随着木质素用量的增多，羟甲基含量逐渐减少。

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n hydroxymethylation and amination of polyacrylamide were studied, and the effects of process conditions on the rate of hydroxymethyl group and amino group combined on polyacrylamide were investigated.

对聚丙烯酰胺的N羟甲基化及氨基化过程进行了探讨，研究了工艺条件对羟甲基化率和氨基化率的影响。

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the infrared spectra of tris ( hydroxymethyl) aminomethane ( tam) in the range 4000~ 450 cm-1 were measured from 20 ℃ to 140 ℃.

在4000～450cm-1波段范围内测定了三羟甲基甲胺（TAM）在20～140℃的红外光谱。

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tri ( hydroxymethyl) aminomethane arsenate single crystal

三羟甲基氨基甲烷砷酸盐单晶的研究

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discussion of "anchimeric effect" of hydroxymethyl epoxy resin

羟甲基环氧树脂的邻位效应的探讨

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