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

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。

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

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。

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。

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）。

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

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

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。

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。

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。

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

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。

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

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）。

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。

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。

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。

tri ( hydroxymethyl) aminomethane arsenate single crystal

三羟甲基氨基甲烷砷酸盐单晶的研究

discussion of "anchimeric effect" of hydroxymethyl epoxy resin

羟甲基环氧树脂的邻位效应的探讨