查询词典 structure constant

The selected area electron diffraction pattern also shows that the epi-layer is 3C-SiC film with a zinc blende structure,and the calculated lattice constant is 0.4362nm.

选区电子衍射花样标定结果再次说明外延薄膜为闪锌矿结构的3C-SiC，计算的晶格常数为0.4362nm。

The nanocrystallite shows the cubic zinc blende structure, and the average size is 55nm, the minimum size is 3nm. The lattice constant is 5.869×10~(-10)m. The nanocrystallite shows the obvious quantum size effect.

研究结果表明合成的晶粒具有立方闪锌矿结构，平均粒径为55nm，最小粒径为3nm，晶格常数为5.869×10~(-10)m，具有明显的量子尺寸效应，而且晶粒的完整性好，产率高。

SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究，采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓，以光催化降解溴代甲烷为模型反应，系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响，结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段，深入地讨论了超强酸化对TiO〓的改性机理，阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

Development student reading elementary text speech text of the ability be one of the target of language teaching in the high school and re- examine to cantillate to read in the text the speech the culture and education learn of function, cantillate to read is study text speech text of importance method, cantillate of classroom read preparation work to include introduction author and background, divide the line structure layer etc., but want to see demand but settle, don't make fix constant program, slice can't because it be the teaching method of old type home school simple negation it, many language master so have deep culture, language achievement bottom, might it not be read because of cantillate but receive benefit bandit shallow.

培养学生阅读浅易文言文的能力，是中学语文教学的目标之一，重新审视诵读在文言文教学中的作用，诵读是学习文言文的重要方法，课堂的诵读准备工作包括介绍作者和背景，划分结构层次等，但要视需要而定，不要搞成固定不变的程式，切不可因为它是旧式私塾的教法就简单否定它，许多语言大师所以具有深厚的文化、语言功底，莫不因诵读而得益匪浅。

At the same time, on the base of analysis of the present situation, the development trend and the leading edge technology, the necessity and feasibility about the exploitation of the full hydraulic bulldozer"s sate monitoring and fault diagnosis system is given; According to the structure, working feature and working environment, it works out system schema and system composition; The system is divided into display module, communication module and fault diagnosis module by means of block design, the implementation method and key parameter are also given; In light of the features of the full hydraulic bulldozer, the state monitoring and fault diagnosis platform composed of controller RC6-9 and display DI2/10 is designed based on CAN-Bus and the hardware design is completed; It lists the measured values and state of monitored parameters which should be real-time displayed in monitoring module as well as the data which will be transmitted; Furthermore, On the base of the study of, it gives 34 kinds of constant faults" diagnosis methods; Using BODAS software and DPS software, it compile the program code of the controller and the displayer; At last, this paper design and make the simulation test device of control system of construction machinery, through the experiment, the realizability, the categoricalness, the reliability, the stability and real-time are tested, in addition, the improved methods are given.

本文收集整理了国内外智能推土机研究的相关文献资料，综合分析了国内外智能推土机的研究现状、发展趋势和前沿技术，论证了开发全液压推土机智能系统的重要组成部分&全液压推土机状态监测与故障诊断系统&的必要性和可行性；根据全液压推土机的结构、作业特点和作业环境，制定了全液压推土机状态监测与故障诊断系统方案，确定了系统的结构组成；采用模块化设计方法，将整个系统分成了显示、通信和故障诊断三个模块，给出了各模块功能的实现方法，确定了各模块的关键技术参数：选用RC6-9和DI2／10作为系统的控制器和显示器，用CAN总线搭建了系统的通信平台，完成了系统的硬件设计；确定了系统监测参数和通信数据，对全液压推土机常见故障特征进行了分析，给出了34种常见故障的诊断方法；在BODAS软件和DPS软件的集成编程环境下，编写了控制器和显示器程序；设计并制作了工程机械控制系统模拟试验板，并在此基础上通过多次的程序调试与试验，对所设计的全液压推土机状态监测与故障诊断系统功能的可实现性、完备性、可靠性、稳定性和实时性进行了检验，证实了此系统的可行性，并提出了进一步的改进方案和措施。

The real-world joints in the aircraft structure usually consist of multi-row fasteners. This thesis builds the 3D FE contact analysis model of a typical aircraft joint with three-row countersunk screws, and studies pin-load distribution and stress characteristics under constant and varied cross-section thicknesses as well as with and without pre-tighten screw conditions for the joint. Many applied pin-load numerical distribution laws for different conditions in the joint are recognized.

本文对典型的多排沉头螺钉接头建立了三维有限元接触分析模型，对螺钉的钉载分布在截面等厚度和变厚度、无预紧力和加预紧力多种情况下进行了数值计算分析，给出了诸多实用化钉载分布规律。

with a constant network technology development,people are growingly accustomed to e-payment.e-payment is a key element of electronic commerce and also a fundamental factor for its development.e-payment is one of china electron service that contains custom business system,china electronic-port e-payment and banking system.at present,many chinese e-payment services develop on the basis of commercial banking services and then imitate banking business into internet to start a new e-business,so-called traditional appending e-commercial system.a basic structure of banking e-payment system and some relevant notions were desribed and the designing proposal of web service were studied in this paper.

随着网络技术的发展，人们越来越适应并慢慢习惯于网上支付。这种网上支付的方式是电子商务的关键环节，也是电子商务得以顺利发展的基础条件。网上支付系统是我国电子领域的配套服务项目之一。该系统由海关业务系统、网上支付系统以及银行业务系统三部分组成。我国目前开办的网上银行业务都是在现有商业银行基础上发展起来，把银行服务业务运用到internet，开设新的电子服务窗口，即所谓传统业务的外挂电子银行系统。本文对银行网上支付系统的整体结构及相关概念做了介绍，并且研究了其中web服务的设计方案。

As to the problems in the development of Suzhou export-oriented economy, such as imbalance of industrial development, low proportion of tertiary industry, and irrationalness of industrial structure, we need change strategies to attract more qualified foreign investment, depend on industrial centralization to quicken the localization of foreign enterprises and promote the constant development of Suzhou export-oriented economy.

针对苏州外向型经济发展中存在的产业发展不均衡，第三产业比重偏低，产业结构不尽合理等问题，应改变招商引资策略，以质量标准引进外资，依靠产业集群化，加快外资企业落地生根，促进苏州外向型经济可持续发展。

This paper offers a design scheme using single chip microcomputer AT89S51 and periphery chip LM331, MAX7219, among which, the MCU is a instrument designed for gaining and controlling data from linear strain displacement sensor under constant voltage and presser sensor located at plank. It is pithily in structure and excellent in reliability.

文中介绍利用单片机AT89S51和外围芯片LM331、MAX7219的设计方案，其中微处理器单元是用来从恒电势的线性应变位移传感器和装在支架上的压力传感器的电信号中获取及处理数据的设备，安装在轻的铝合金外壳中，按用途需要设计而成，它结构简洁、可靠性高。

Through anaslysing section real constant and weight of different parts and selecting different element type which are based on structure blueprint, we will build the ANSYS model.2. Unloader boom will be discrete based on trolly travelling on it.

根据卸船机的金属结构设计图纸确定卸船机各个部件几何尺寸以及具体位置，通过分析不同部件的截面尺寸以及重量计算其相应的截面性质和材料密度，以及不同的结构部件采用其相应的单元类型，从而建立抓斗卸船机作业时的载荷变化与运行的在ANSYS中数学模型。

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。