查询词典 structure constant

The structures of the straight core-pulling mechanism such as guide strip slide structure,guide rod sliding plate structure,guide strip structure and sleeve structure are introduced and their characterˉistics are stated.

介绍了导轨滑块机构、导杆滑板机构、导条机构、套筒机构等直抽芯机构的结构及特点，此类机构主要用于管件类模具中，应根据实际情况加以选

Monastery not only looks dangerous, strange, spectacular, the building construction is also distinctive, rich and varied forms, have eaves Dan Yan, Zhong Yan, three canopies, colon mast structure carried a beam structure, flat-topped structure, the structure of brackets, there is the roof Ridge, vertical ridges, the ridges closure, poor soil.

悬空寺不仅外貌惊险，奇特、壮观，建筑构造也颇具特色，形式丰富多彩，屋檐有单檐、重檐、三层檐，结桅构有抬梁结构、平顶结构、斗拱结构，屋顶有正脊、垂脊、戗脊、贫脊。

The unbonded partially prestressed concrete flat-beam frame structure has been used in the practice project in our country, but the aseismatic study of this structure is not perfect at present, study on theory is lagged behind the demand of engineering apply. It has important theoretic meaning and applied value to go deep into the examinational study about the prestressed concrete flat-beam frame structures.This thesis sums up the study of the RC flat-beam frame structure, the PC frame structure, the steel-fiber concrete, the performance of the steel-fiber concrete and its influence to the seismic resistance of the frame.

近年来国内已经开始在实际工程中采用无粘结部分预应力混凝土扁梁框架结构，但是目前对这种结构形式的抗震研究工作还不完善，理论研究已滞后于工程应用的需要，因此深入进行扁梁框架结构的研究，在经济合理的情况下确保该结构的抗震安全性具有重要的理论意义和应用价值。

In the process of building and using the mass concrete structures, because of the effect of out-side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance Using nondestructive testing method to test the concrete"s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseasesThis dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic FEM to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, Researched the principles of the first-arriving waves" phase when the cracks" depths are not same, obtained the relation between the inversion point and the cracks" depth, which has the direction sense in the application of projects,The second part of this dissertation is CT , which used the ultrasonic wave running through the tested-substance to get arriving-time of the ultrasonic wave, then inverse the image This dissertation drawed one CT program which can well present the different little cells ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested-substance, CT has the better using foreground..

在混凝土结构的施工及使用过程中，由于受其自身及外界各种因素的影响，常常会产生一些缺陷，对结构物的承载能力和耐久性造成严重影响，采用无损检测技术进行质量检测和健康诊断，这对混凝土结构开展安全、稳定性评估以及病害隐患治理研究具有重要意义。本论文主要针对大体积混凝土结构缺陷的检测方法展开研究工作，重点讨论了超声波法检测混凝土结构裂缝的基本原理和方法及其特点、适用范围，运用动力有限元数值模拟其检测过程，探讨了有裂缝缺陷的混凝土结构在脉冲荷载作用下弹性波的传播及其变化特征，研究了不同裂缝深度下首波相位变化规律，得出了反转临界点与裂缝深度之间的关系，这对实际工程应用具有指导意义。声波CT是一种新的无损检测技术，它是利用声波穿透被检测体获取声波接收时间，来进行计算机反演成像的技术。本文利用直射线法编制了层析成像程序，能较好地呈现被检测物体各微小单元的声波速度分布图像，从而对检测体的质量状况作出诊断评估，具有较好的应用发展前景。

Data structure is a professional and technical basis for classes, and he can help you learn computer analysis of the data processing structure characteristics, in order to choose the appropriate application of the logic of data structures, storage structures and the corresponding algorithms, and preliminary analysis of algorithms of time and space analysis techniques, But some algorithm data structure (linear scales, warehouse and accounts, string, etc.) will be some difficulty in understanding the data structure algorithms demonstration system is an effective way to resolve this difficult, and he gives a more intuitive understanding.

数据结构是一门专业技术基础课，他能帮助大家学会分析研究计算机加工的数据结构的特性，以便为应用涉及的数据选择适当的逻辑结构、存储结构及其相应的算法，并初步学会算法的时间分析和空间分析的技术，但数据结构中的一些算法（线性表、栈和队列、串等）在理解上会有些困难，数据结构算法演示系统正是解决这个困难的一种有效方法，他给人更直观的理解。

House selling quite popular, such as Han Fei Youth City ping small double-layer than its small size getting more fierce, the sandwich structure lishui Jiayuan only count only 90 square meters floor area, set up before each duplex structure 150 square meters or so, met the needs of a compact double, and Golden Harbor of slope roof structure will also be thoroughly double-space use, sales rose steadily …… These duplex structure is not sufficient to show there is no market, but positioning is not accurate enough, the most critical or in the area and the total price.

事实上，有相当一部分的市场就像生活在全双工，我们可以看到在市场上，许多小面积的复式楼楼顶楼或变相和坡屋面结构设计等房屋销售很受欢迎，如韩妃小青年城平双层比其小尺寸变得更加激烈，夹心结构丽水佳园唯一指望只有九〇平方米楼面面积，建立在每个复式结构150平方米左右，满足需要的紧凑型双，而黄金港坡屋顶结构也将进行彻底的双空间使用，销售稳步上升……这些复式结构不足以表明没有市场，但定位是不准确的不足，最关键的，或在该地区的总价格。

From the lumped equivalent circuit model, the phase shift/attenuation and impedance characteristics of the novel structure are first analysed based on the Bloch theory, which shows the novel structure has properties analogous to those of a bandpass filter: the attenuation constant keeps zero with a continuous and smooth characteristic impedance distribution within the passband and the bandwidth may be arbitrarily specified; characteristic impedance is purely imaginary with the inhibition of the electromagetic wave propagation outside the passband.

首先从一般的等效电路模型出发，根据Bloch周期性理论对该结构的相移、衰减和阻抗特性进行了分析，结果表明该新结构具有类似带通滤波器的特性：通带内衰减常数为零，特性阻抗为实数并随频率连续平滑分布，具有可任意指定的阻抗匹配带宽；带外特性阻抗为纯虚数，电磁波传播受到抑制。

With the analysis of the bond structure of the film as deposited and annealed, we can infer that the increased content of cage structure comprised of Si-O-Si bond with bigger bond angle may be the reason of decreased dielectric constant.

薄膜经过400℃热处理后，其介电常数由3.85降低到2.85，对其FTIR谱的分析指出，薄膜中鼠笼式结构比例的增加可能是薄膜介电常数降低的主要原因。

Since the reform and opening to the outside world in China, with the constant adjustment of ownership structure and production relation, China has experienced great changes of stratum structure and stratified differentiation, which brings complex impact on political participation mechanism, simultaneous, political participation affects the process of social stratum changes in a degree.

改革开放以来，随着所有制结构和生产关系的不断调整，我国社会阶层分化日益明显，阶层结构发生了重大的变迁。阶层结构的变化给我国的政治参与机制带来了十分复杂的影响，同时公民政治参与也在一定程度上影响阶层结构变迁的进程。

Since the reform and opening to the outside world in China, with the constant adjustment of ownership structure and production relation, China has experienced great changes of stratum structure and stratified differentiation, brings complex impact on political participation mechanism, simultaneous, political participation affects the process of social stratum changes in a degree.

改革开放以来，随着所有制结构和生产关系的不断调整，我国阶层分化日益明显，阶层结构发生了重大的变迁。阶层结构的变化给我国的参与机制带来了十分复杂的，同时公民政治参与也在一定程度上影响阶层结构变迁的进程。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。