查询词典 synthesize

Carbon disulfide, dialkylamine, antimony trioxide have been used to synthesize the other organic antimony compounds-dialkyldithiocarbamate. The optimal technological conditions and purificating method have been studied in detail.

以二硫化碳、二元仲胺、三氧化二锑为原料合成了结构为Sb-〓的另一类含Sb-S键的有机锑化合物，通过大量的实验探索，详细研究了各种二烷基二硫代氨基甲酸锑的最佳合成工艺条件及产品的提纯方法，为该类化合物的制备提供了一种工艺简便，收率较高的合成工艺途径。

Methods Diethyl phthalate and diethyl succinate were used for raw material to synthesize the Rubidate.

方法以邻苯二甲酸二乙酯和丁二酸二乙酯为原料合成茜草双酯。

The recent advances in the main clean processes to synthesize diphenylmethane diisocyanates are reviewed, such as BTC method, condensation of aniline, reductive carbonylation of nitrobenzene, oxidative carbonylation of aniline, methoxycarbonylation of aniline, alcoholysis of N,N'-diphenyl urea and the coupling process.

回顾了清洁合成二苯甲烷二异氰酸酯的几种主要方法，如BTC法、苯胺缩和法、硝基苯还原羰基化法、苯胺氧化羰基化法、碳酸酯法、二苯基脲法和反应耦合法等合成路线。

Several steps were put forward to synthesize powders with thin granule, uniformity and good dispersity.

提出了制备颗粒细小、均匀、分散性好的粉体颗粒需要采取的几个措施。

The key problem is to synthesize high stereoselectively trans- 2,5- disubstituted tetrahydrofurans.

高立体选择性合成反式-2，5-二取代四氢呋喃是期待解决的关键问题。

In the third part of this dissertation, based on the leading compound ACPD, we design and asymmetric syhthesized two analogues: 56 and 57 by using Seebach's self- regeneration strategy to synthesize α,α-disubstituted amino acid as the key step.

论文的第二部分，我们利用我们所开发的合成α，α双取代氨基酸的方法，以对甲基苯甲醛为原料，经过分子内付克烷基化、氧化银氧化和氢化等16步反应，完成了代谢型谷氨酸受体拮抗剂-AIDA的不对称合成。

Surface coatings are open dynamitic systems in aquatic environments, in which various components could synthesize, accumulate, transform, and degradation.

生物膜在自然水体中是一个开放的动力学系统，水环境中的各种成分可以在生物膜上发生着合成、聚结、转化、降解等作用。

Endoplasmic reticulum is found in every cell and helps synthesize proteins and monitor how they're folded.

每一细胞中都有内质网的存在，内质网帮助合成蛋白质并监视蛋白质的折叠。

The characters of powder are connected with the inside structure and synthesize-technics of materials. In this paper, we want to search a optimize technics of materials synthesizing, and prepare a kind of nanosize powder which shape like ball and have good dispersed character. At the same time, we want to obtain a bridge structure of Zn-O-Tb through dopping of Tb, which can achieve efficient energy transfer from ZnO hosts to excited states of dopants, The doped powder can eradiate blazing green light because of efficient emission buildup from dopants and ZnO hosts, and the powder can emission a pure light. And we want to research the structure in doped ZnO for the further research of low-tension fluorescence of ZnO.

粉体的这些特性无不与其内部结构特征和制备工艺有关，基于这些，本文的实验目的是希望能寻找一种合适的制备方法和优化工艺，制备分散性好的球形纳米颗粒，希望改善其表面形貌，同时，通过铽掺杂，希望得到一种Zn-O-Tb桥联结构，实现氧化锌基体向铽发光中心的能量传递，希望铽中心特征发射和氧化锌绿光发射能有效叠加增强，改善粉体的单色性，制备出好的复合粉体，分析清楚其结构，从而为后续低压荧光特性研究作准备。

The article adopted the method of orthogonal design using Polyethylene Glycol and Methacrylic Acid to esterify Polythylene-glycol-mono Methacrylate, then using PMA, MAA and Methacrylic Acid Sulfonic Sodium as raw material to synthesize Polycarboxylic type water-reducer.

用正交实验法研究了聚乙二醇和甲基丙烯酸酯化合成聚乙二醇单甲基丙烯酸酯的合成工艺，以该酯化物与MAA和甲基丙烯酸磺酸钠为原料，在引发剂的作用下合成聚羧酸系减水剂。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。