查询词典 structure group

A gas permeation model associated with the structure of membrane and a method of determined membrane structure parameters such as tortuosity were established.

理论分析了疏水性多孔膜气体渗透原理和膜各种结构特征参数的关系，并建立了计算气体渗透通量的模型方程，以及确定多孔膜曲折因子等结构参数的方法。

Furthermore, large-scale fold and fault structure hasn't been found around the Tianchi Lake, but the original prismatic joints and radial joints developed well in the trachyte, so the rock mass is dissected into fractured fragmental structure and the integration of rock mass is further destroyed.

在构造方面，长白山天池周围虽然没有发现大规模的褶皱断裂构造，但粗面岩中原生柱状节理、放射状节理十分发育，这些节理裂隙将岩体切割成十分破碎的碎裂结构，使岩体极易产生岩崩、落石，使岩体的完整性遭到了进一步的破坏。

The ancient Chinese plays like Dou-E Tragedy and Peach-blossom Fan have a dual structure. Most tragic works in ancient China have many common points in terms of their tragicalness and deep structure.

《窦娥冤》《桃花扇》等剧具有双重结构，中国古代大多数悲剧作品的悲剧性和深层结构具有很多的共性，其&悲剧原型&是各个悲剧的深层主题，它在不同的作品中反复出现，具有约定性的语义联想。

And meanwhile, the drama structure power formed with leading motive's transfixion and well layouted tonality enhances the integrality of the musical drama structure ulteriorly.

更多具有独立的戏剧结构，音乐的发展与戏剧内容密切配合，同时，主导动机的贯穿及调性合理有效的布局所形成的戏剧结构力，更增强了整体音乐戏剧结构的完整性。

Research Center of Continental dynamics, Institute of Geology, Chinese Academy of Geological Sciences dedicates to Tibetan Plateau research including structure and high-pressure transmutative zone of Tibetan Plateau, earthquake of positive fault, high-pressure transmutative zone of Aerjin region, uplifting mechanism of Tibetan Plateau, deep structure of Tibetan Plateau, etc.

中国地质科学院地质所大陆动力学研究中心从事有关青藏高原的研究，包括青藏高原构造和超高压变质带研究、正断层地震活动、阿尔金超高压变质带、青藏高原形成机制、青藏高原深部结构等。

Analysis of body length structure of Trichiurus japonicus and Larimichthys polyactis revealed that there obviously had been a trend of miniaturization of stock since 1980's, the current miniaturization is very serious, but there was little change in body length structure of Setipinna taty .

对带鱼、小黄鱼的体长组成结构分析表明它们的群体从20世纪80年代开始趋于明显的小型化，当前的小型化程度已经相当严重；而在此期间黄鲫的体长组成结构变化不大。

The structure of ArsA ATPase with its ligand, arsenite, either on membranes or in solution, was revealed. The current trimeric ring-like structure of this protein doubts the previous dimeric model and gives deeper insight on this protein's physiological roles.

对亚砷酸根复合体ArsA蛋白质分子结构的揭示显示了该蛋白在亚砷酸根存在情况下，在膜上和水溶液中都是环形三聚体，对前人的二聚体模型假说提出了置疑，并为解释它的生理功能提供了重要的结构信息。

The characteristic of BMS silica mesostructure and the effect of various synthesis factor (including ammonia/silica molar ratio, composition concentration variation, surfactant alkyl chain length, auxiliary organic molecules such as trimethylbenzene, catalyst structure and properties, solvent and cosolvent volume and its polarity, aging and drying conditions and postsynthesis hydrothermal treatment and so on) on the resultant BMS silica structure and properties were assessed using a series of analytical techniques such as XRD, SEM, TEM,〓Si MAS NMR, TG-DTA and N〓 adsorption measurements.

结果显示BMS二氧化硅分子筛是由大量封装胶束的纳米二氧化硅颗粒（约为20-40nm）堆积形成的聚集体，其双介孔分布中较小的介孔起因于颗粒内部表面活性剂模板形成的介孔，我们称之为骨架介孔。它类似于我们在MCM-41中看到的介孔，可通过改变表面活性剂胶束的尺寸而在2.56-3.65nm的范围内进行调节。

Equiaxed and bigger grains are produced after C.P.Ti is deformed under the high temperature. Besides, many tiny subgrains were found in some of the metallurgical structure. The dislocation reaction caused by the deformation under the high strain rate generates ductile cellular metastructures, while the equiaxed cellular metastructures are generated under the low strain rate. The metallurgical structure of TC4 alloy including lath-shaped hexagonal martensite and trimetric martensite only exists in the higher temperature. The homogeneous, tiny and reticular grain shown after extreme high temperature deformation.

在高应变速率下变形引起的位错反应形成拉长的胞状亚结构，而低应变速率下变形则形成等轴的胞状亚结构；TC4合金在特高温变形条件下其金相组织呈网篮状，显微组织几乎全部为均匀细小的晶粒，同时出现了板条状六方马氏体；在温度尤其高的情况下还形成了斜方马氏体，变形引起的位错反应形成六方位错网络，在1200℃以下的变形易产生孪晶。

Permanent magnet synchronous motor driven by triphase sinusoidal current is research object in this paper. On the basis of analysis of the structure, movement principle and math model of PMSM, Fundamental theories and structure of the system of PMSM alternating current servo systems based on DTC are discussed. Then Simulation models of traditional PMSM DTC and PMSM DTC based on vectors subdivision are established separately.

本文以三相正弦波驱动的永磁同步电机为研究对象，在分析永磁同步电机结构及数学模型的基础上，系统阐述了基于直接转矩控制的永磁同步电机交流伺服系统的基本原理和系统构成，并在MATLAB仿真环境下分别建立了传统直接转矩控制和基于矢量细分算法的直接转矩控制系统的仿真模型。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。