查询词典 heterogeneous

This NS-MCM-41-Pd proves to be an efficient heterogeneous catalyst to catalyze aryl bromides with organozinc reagents for Negishi reaction. In the third suject, fluorescent surfactants with different conjugated aromatic moieties and changeable and gradually extended hydrophobic lengths were successfully synthesized by multiple synthesized manipulations.

首先利用颗粒大小为奈米尺度(约100 nm)、表面积约 660 m2/g 与孔径大小约 2.6 nm 且孔道分布为虫洞结构之孔洞材料，NS-MCM-41，作为异相触媒担体，稼接上钯错合物形成异相催化剂 NS-MCM-41-Pd，催化 aryl bromides 与 organozinc reagents 进行 Negishi reaction，并探讨触媒反应后再回收活性测试。

The prospect of the heterogeneous catalytic ozonation and some problems are also analyzed.

此外还对该技术的应用前景和研究中所存在的问题进行了分析。

The presence of the bicarbonate had no effect on the heterogeneous catalytic ozonation process.

而HCO3-的存在并未对MnOx/GAC多相催化臭氧氧化过程产生不利影响。

Aims In natural environments, resources of critical importance to plant growth are patchily distributed, even at a small spatial scale. The aims of this study are to address: 1 Centella asiatica exploitation of heterogeneous microsites in different habitats, 2 hierarchical effects of habitats and microsites with different herbaceous coverage on growth traits of C.

为研究克隆植物在不同生境中对小生境的利用能力和对不同尺度异质性生境的等级可塑性及其格局差异，比较了林缘和荒草坡不同草本层盖度小生境中积雪草分株种群、克隆片段和叶水平的形态和生理特征。

Pectinase is heterogeneous group of related enzymes that hydrolyze the pectic substances, which can break down complex pectin into simpler molecules like galacturonic acids.

果胶酶是一类分解果胶质的酶的总称，它能将复杂的果胶分解为半乳糖醛酸等小分子。

Esterification of phenethyl alcohol with acetic acid was studied using lanthanum chloride supported on activated carbon as heterogeneous catalyst.

以活性炭负载三氯化镧为非均相催化剂，对乙酸与苯乙醇之间的酯化反应进行了研究，考察了催化剂用量、醇酸摩尔比、反应时间对乙酸苯乙酯收率的影响。

Our data support the notion that the heterogeneous phenotypical and molecular traits of human breast cancers are a function of their CSC content.

我们的数据支持人乳腺癌的异质性和分子特征是肿瘤干细胞的功能的观点。

They are phenotypically heterogeneous, a proportion having normal appearances, while others are enlarged and/or are full of engulfed particles

他们在表型上是异质的，其中一些呈正常外观，而剩下的体型变大或/和内部充满了吞噬微粒。

AbstractThe endothelial corneal dystrophiesresult from primary endothelial dysfunction,which are genetically and phenotypically heterogeneous.

角膜内皮营养不良endothelial corneal dystrophy，ECD）是由原发性角膜内皮功能紊乱引起的一种角膜营养不良，其遗传方式和临床表型都具有异质性的特点。

In addition, the genotype-phenotype and race relationship study is growing more and more noticeable because HCM is not only a genetically and phenotypically heterogeneous disease but also a disease has racial difference. However, most of the knowledge is derived from studies in Caucasian patients, little is known in Chinese patients with HCM.

国外学者对上述基因突变的分子遗传学和临床研究显示这些突变与肥厚型心肌病的临床表现密切相关，因而研究其基因型及临床表型关系具有重要的诊断意义。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。