In non-destructive X-ray fluorescence analysis with thick target, correction method for difference in fluorescence intensity of elements due to sample shape and different distance to the source detector with yttrium as an outer mark element was studied. 摘要在厚靶的非破坏性x射线萤光分析中,以钇做外标元素,研究了不同样品形状及与源、探测器距离不同时,引起接收到元素萤光强度差异的校正方法。
The incomplete circulations of distance cost and productive element factors and the unbalanced innovation and expansion of technology have further intensified the regional unbalances. 距离成本和生产要素的不完全性、技术创新和技术扩散的非性等进一步加剧了区域间的非性。
The laser gun's firing distance is decided in uses the optical element power the size. 激光枪的射程取决于所用光学元件功率的大小。
The impedance matrix element is calculated by the dipole model method when the distance between the equivalent dipole element and the observation point is beyond a critical distance. 当等效偶极子单元离观察点大于临界距离时,用偶极子模型法计算阻抗矩阵元素。
The distance between antenna elements and element's excitation currents are used as variables to optimize the side lobe of equal space linear array firstly. 首先,以各单元馈电电流和单一阵元间距为变量,对一般天线阵进行了降低旁瓣电平的优化。
The influences of the distance ( d_1) between the bit line and the element, the width ( w) and the thickness ( t) of the word and bit line on the distributions of the magnetic fields on the surface of the free layer are discussed. 利用该模型讨论了存储单元与位线间距离(d1),字、位线宽度(w)及字、位线厚度(t)对存储单元自由层表面磁场分布的影响。
Having analyzed many factors, such as distance, angle, element size, the number of gauss integral, etc., which have great effect on the gauss integral precision. 分析了距离、角度、单元尺寸以及高斯点个数等因素对积分精度的影响,提出了一套满足不同精度要求的积分判据。
Static and dynamic characteristics of SEL 321 inter phase distance protective element and the testing methods SEL-321相间距离保护静态特性与动态特性及试验方法
Analysis and research on the ability of distance protection element standing the influence of transition resistance 距离保护特性元件躲过渡电阻能力分析与研究
It almost forestall the international market, but its process is still in secret. There are a long distance between China and overseas in the performance of MoSi_2 heating element. 世界上生产MoSi2发热元件的厂家中以瑞典的康泰尔(Kanthal)的产品质量最好,几乎垄断了整个国际市场,但其生产工艺至今保密。
In the transducer, the time that takes a torsion pulse to traverse a sonic waveguide from a movable permanent magnet to a pulse responsive element is determined and proportional to the distance from the magnet to the pulse responsive element. 它能够确定一个扭转脉冲从可动磁铁沿波导管传递到声脉冲响应装置的时间,而该时间和可动磁铁到脉冲响应装置间的距离成正比。
The assessment results of fuzzy mathematics integration judge, distance distinguish method and matter element analysis method was the level of air quality; 模糊综合评判、距离判别法和物元分析法最终得到的都是空气质量所属级别,评价结果比较直观。
Distance relays is the primary element of the line protection, the performance characteristic of which has a direct and vital affect on the security and stability during electric system's operating. 距离保护作为线路保护的基本组成部分,其工作特性对电力系统的安全稳定运行有着直接和重要的影响。
First, use the grid-based kd-tree to increase the intersection efficiency, and in interpolation methods, offer the inverse distance interpolation method and implement bilinear/ trilinear interpolation based on form function of finite element method, which is second-order accurate and computationally inexpensive. 在插值方法研究方面详细介绍了逆距离插值方法,并引入有限单元法中的型函数思想实现双线性/三线性插值,这种基于型函数的线性插值方法具有严格二阶精度、计算简单的优点。
In calculating the integral of triangular element, the integral points were selected automatically according to the ratio of the distance between source point and center point of the field element to the average length of sides of the field element. 对三角单元进行积分计算时,根据源点与场单元中心的距离与场单元平均边长的比值自动选取积分点数。
The paper ( based on the code 49 identification system developed by theauther), expounds encoding principle, and interprets decoding method by means of measure-ment the distance between similar edge of adjacent element in code 49 decoding software de-sign. 着重论述49码的编码原理,阐述在49码译码软件设计中,采用相邻元素相似边距离的测量进行译码的方法。
Through analyzing the influence of focal point and focus distance on system distortion in distortion calculation equation, an analytical method& element analysis method for solving the focal point and focus distance of an optical system is put forward in the paper. 通过分析畸变计算公式中的主点、主距对系统畸变的影响,提出一种求解光学系统主点、主距的解析方法&元素分解法。
A distance relay with new criterion, cooperating with a phase-comparison element, can get desired characteristic. 具有新判据的距离继电器与选相元件配合,能够获得理想特性。
Diffusion of alloy element in Cu-Al interface was obvious, presenting longer diffusion distance, and no deposition was found in despite of outstanding diffusibility of aluminium element. 其中,Cu-Al交界处的扩散较为明显,合金元素扩散的距离较长,Al元素的扩散能力较强,但未见析出物。
The diodes are placed in an optimum distance and the microstrip is used as a tuned element. 采用二极管按最佳的间距安装,用微带线作为调谐元件。
The article brings forward a method of simplification and equivalent processing to its restraint, using the regression analysis with displacement of the essential control point as the goal parameter to find the best equivalent restraint distance, establishing the finite element model. 针对其复杂的约束提出一种简化和等效处理方法,以关键控制点的位移为目标参量进行回归分析,找出了最佳的等效约束距离,建立了有限元模型。
No Guide Distance Measurement Using Laser and Path Difference Diffraction Element 用程差衍射器件实现激光干涉无导轨测距
The ratio expression of yoke thickness to polar distance is educed, and this ratio range is also gained by finite element simulation, which provides referenced bases for analyzing the structure similarity of Permanent Magnet Linear Motor. 推导出动子轭部厚度与极距比值的表达式,分析得到该比值最合理的取值范围,为永磁直线电机的结构相似性分析提供了参考依据。
Meanwhile, the treatment that the distance of finite element nodes is equal to the one of adjacent atoms would consume a large amount of storage space and computation time. 同时在有限元的某些区域,有限元节点间距几乎与原子间距相等。这又将消耗大量的存储空间和计算时间。
Bullough used "psychical distance" as a term in his paper "Psychical distance as an art element and aesthetic principle". 布洛在其《作为艺术要素和审美原理的心理距离》这篇文章中第一次使用了心理距离的概念。
The combinations between stator pole and rotor pole, the ratio of stator pole arc width to pole distance and the phase winding connections are further analyzed for the new element generators with single-phase, two or four-phase and five-phase DSEG. 讨论了单相、两相/四相和五相DSEG单元电机新结构定、转子配合关系,定子极宽与定子极距之比以及电枢绕组元件连接方式。
The speech signal based on microphone array is near-field wideband mainly, so the article analyzes the impact of array element spacing, do the simulation according to several different distance of array element spacing. 考虑到麦克风阵列采集到的声信号为近场宽带信号,分析了阵元间距的影响,按几种不同的阵元间距值作了仿真试验。
In the method, as viewed from the point of distance between two fuzzy sets, the contribution of one focal element to the other elements 'belief or plausibility function is defined, and the fuzzy evidence combination rule is established. 该方法从模糊集合间距离的角度,确定模糊焦元对其它焦元的信任度、似真度函数的贡献程度,并建立了有效的模糊证据组合规则。
In practical MIMO system, the distance between each antenna element cannot be very large, so there exists spatial fading correlation between antennas. 实际使用的MIMO系统各天线单元之间的距离不可能很大,各天线之间存在着空间衰落相关。
Here we discuss the influence of the design of antenna element and array arrangement, which include the number of antenna elements, the distance between adjacent element and the array structure. 本文讨论了天线单元设计及布阵形式对于调零效果的影响,涉及的内容包括天线单元的个数,天线单元间的间距,以及天线布阵方式。