查询词典 synthesize

Therefore, this paper selected the direct oxidation route to synthesize α-isophorone, and according to the principles of green chemistry, oxygen was used as the oxidant, with non-metal N-hydroxy-phthalimide as catalyst, for preparation of Isophorone.

因此本论文的研究选用以α-异佛尔酮直接氧化的路线，且根据绿色化学的原则，以氧气为氧化剂，用一种无金属参与的N–羟基邻苯二甲酰亚胺为催化剂催化α-异佛尔酮，为氧代异佛尔酮的制备提供一条全新的途径。

In this article, high-pure lactic acid and ethanol acid were used to synthesized PLGA by direct condensation polymerization, and zinc octanoate of low nocuity was used as katalyst, instead of stannous octanoate to synthesize PLGA by the way of opening ring.

本文首次采用高纯度乳酸、乙醇酸直接缩聚合成无催化剂的端羧基PLGA，并分别采用了低毒性辛酸锌代替辛酸亚锡为催化剂通过开环聚合法合成端羧基／酯封端PLGA。

The paper take the Ce (SO4)2/PAn as catalyst and cyclohexanone, 1,2-propylene glycol as raw materialr to synthesize cyclohexanonel 1,2-propylene glycol ketal.

以硫酸高铈[Ce (SO4)2]掺杂聚苯胺为催化剂，环己酮和1，2-丙二醇为原料，催化合成环己酮1，2-丙二醇缩酮。

Based on this, a program is developed in VB language to analyze and synthesize the EGMs kinematically, which has a perfect man-machine interface and could be manipulated easily. All kinds of help are shown in order that user can input correct data.

在此基础上，用VB语言开发出了一个周转轮系计算机辅助运动分析和运动综合的软件；该软件操作简便，具有良好的人机界面，在操作过程中随时给出提示，以便用户输入正确的数据。

Immobilized beer yeast cells entrapped in κ carrageenan konjak polysaccharide gel were used to synthesize CDP choline.

κ-卡拉胶-魔芋多糖复配胶包埋的啤酒酵母细胞，经冻融处理后用于合成胞嘧啶核苷二磷酸胆碱。

This thesis sets up a new method to synthesize stereoselectively ?ra玸--2,5-disubstituted tetrahydrofurans by introducing two alkyl groups in 3-C and 5-C of lactol, flash decomposition and hydrogenation.

本文独创新的合成方法：以-乳醇，即-4，10-二氧杂三环[5.2.1.0~(2，6)]-癸-8-烯-3-醇为原料，在其3-位和5-位先反向引入两个取代基，再经过热分解和催化加氢反应，高立体选择性地合成反式-2，5-二取代四氢呋喃。

A new process has been studied to synthesize malonic acid from diethyl malonate through hydrolysis reaction and catalyzing by 732 type cation exchange resin.

用732型阳离子交换树脂催化水解丙二酸二乙酯制取丙二酸，考察了反应温度、反应时间、水与丙二酸二乙酯的质量比、丙二酸二乙酯与树脂质量比等工艺条件对收率的影响。

Rodionov method is applied in this paper, that is, corresponding aldhyde, malonic acid and ammonium acetate are used to synthesize P-amino acids.

本文主要采用Rodionov法进行合成，即以不同类型的醛和丙二酸、乙酸铵为原料来制备β-氨基酸。

The process of esterification of propylene glycol monomethyl ether with acetic acid to synthesize propylene glycol monomethyl ether acetate is investigated using 98% sulfuric acid as catalyst.

研究了以浓硫酸为催化剂，丙二醇甲醚和醋酸酯化合成丙二醇甲醚醋酸酯的过程，考察了醚和酸比例、催化剂用量等因素对反应的影响，并选择甲苯为水萃取剂。

Radio astronomers are now able to synthesize the response of a partially filled aperture of large diameter and thus to map variations in nebular brightness.

射电天文学家现在已经能够把部分充满的大直径孔径进行综合，从而描绘出星云亮度变化图。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失