查询词典 bases

It's found that the aromatic dinitro compounds can be monoreduced to nitroanilines in high selectivity, aromatic nitro compounds and muti-cycle aromatic nitro compounds can be quantitively reduced to the corresponding amine by selenium catalyst with CO/H2O in polar aprotic solvents under atmospheric pressure using medical inorganic bases as co-catalysts.

在实验的基础上提出了对硒催化CO/H_2O还原芳香硝基化合物机理的一些粗浅认识。

Mostly, traditional arithmetic of image edge detection distill edge using gradient maximum or zero-crossing which bases on gray discontinuousness on edge, and it is affected easily by noise.

传统的边缘检测算子大都是基于边缘的灰度不连续性利用梯度局部最大值或二阶导数过零点来检测边缘，容易受噪声干扰。

By the automatic categorization, web pages is distinguishingly created into corresponding data bases according to category info, which improve recall and precision ration of Chinese search engine. In the meantime, automatic categorization info resource is established to provide category message catalog for users. In addition, the quality of automatic categorization in some measure has positive effect upon sequent relativity sort process.

通过自动分类不仅仅可以将网页按照类别信息分别建立相应的数据库，提高中文搜索引擎的查全率和查准率，而且可以建立自动的分类信息资源，为用户提供分类信息目录，并且，自动分类的好与坏，对后面的相关性排序过程也有一定的积极作用。

In this essay, attention will be paid to the problems existing in this new system, the new mode of the documental management system which bases on web,and the technology as well as the safty of this system of paper-free.

本文就无纸化所面临的问题、基于web的无纸化公文管理系统的模型、无纸化公文管理的技术实现及其安全性等方面作一些探讨。

There may be brain electrophysiological bases for aggressive behavior in schizophrenic patients.

精神分裂症患者的攻击行为可能存在脑电生理学的基础。

Many studies paid attention to dissect the genetic bases using different emendatory approaches from phenotypic variation to gene discovery, mainly containing QTL mapping, chemical mutagenesis etc. Especially, QTL analysis was executed for a lot of important quantitative traits.

我们可以沿着由表型变异去发现基因之路，更准确地剖析数量性状的遗传基础；尤其是对作物的许多重要的数量性状进行的QTL研究越来越受到重视。

The morphogenesis of encephalocoele in rats given ETU was investigated by light microscopy. From mutually affect on endothelial cell and the neuron, We explored the molecule bases of changes in encephalocoele through studied expression of eNOS, nNOS, iNOS protein and mRNA.

研究资料表明NO增高可以促使细胞发生凋亡，从而影响神经管的发育，但在三种类型NOS中，究竟是来源于哪一种类型NOS的NO在神经管发育过程中起主导作用目前尚不清楚。

On such bases, quantum gravity changes the epistemological basis of physics.

在此基础上的量子引力改变了物理学的认识论基础。

The development of subject bases on the internal evolutive logic of scientific knowledge and the demand of reality for social progress.

一门学科的发展一是科学知识体系的内在演进逻辑，二是社会进步的现实需求。

This band is assigned to exocyclic carbonyl bond stretching vibrations in the bases. The intensity of this band decreases considerably after irradiation.

在碱基振动区域，辐射前其拉曼谱出现强而宽的C＝0伸长振动谱线1680cm－1，这是与酮基结构有关的谱线，辐射后该谱线强度大大减弱。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。