查询词典 rectangular projection

Microstructure-evolution of the silicon nitride ceramics sample during sintering process was investigated by a synchrotron radiation X-ray computed tomography technique. The projection images of the sample were obtained during the sintering process in real-time. 2-D and 3-D reconstructed images were obtained by treating the projection images of different sintering periods with filter back projection arithmetic and digital image processing methods.

利用同步辐射CT技术，在氮化硅陶瓷样品烧结过程中对其进行实时投影成像，并应用滤波反投影算法和数字图像处理技术，得到了样品在整个烧结过程中内部微结构演化的二维和三维重建图像，实现了对陶瓷固相烧结过程实时、无损的观测。

Single factor experiments were done with the factors including the width of protrusion and the trolley's velocity, which showed that the surface frictional coefficient decreases with the width of protrusion increasing, and doesn't change with the trolley's velocity changing, which was consistent with the results of the orthogonal experiment. A theoretical model of the horizontal projection of a corrugated bionic surface's contact area was built, which showed that the contact area's horizontal projection decreases with width and interval increasing respectively and that the ratio of the contact area's horizontal projection and the vertical load decreases with the vertical load increasing. It indicated that the surface frictional coefficient decreases with the above three factors increasing respectively. Finite element modeling and analysis of interactions of a plate and soils was done using ANSYS, which showed that the plate frictional coefficient is little relative to soil elastic modulus and decreases with vertical surface pressure and that trolley's pull and vertical displacement of bionic surface's control pilot keep constant almost during the plate being pulled. Finite element modeling and analysis of interactions of a corrugated bionic surface and soils was done using ANSYS, which showed that surface frictional coefficient is little relative to soil elastic modulus and decreases with bionic surface's structural parameters and vertical pressure increasing. However, the three factors all didn't affect the surface frictional coefficient remarkably on the condition of 90% dependability. For the first time, bionic surfaces were applied to screw piles, which formed bionic screw piles, and the contrast experiments showed the bionic screw pile had certain resistance-decreasing effects.

建立了波纹型仿生曲面与土壤的接触面积的水平投影的理论模型，表明接触面积的水平投影A随着波纹型仿生曲面突起宽度、两相邻突起间距的增大而减小，接触面积的水平投影与波纹型仿生曲面表面垂直载荷之比随着波纹型仿生曲面表面垂直载荷的增大而减小，进而得出仿生曲面摩擦系数随着波纹型仿生曲面突起宽度、两相邻突起间距以及表面垂直载荷的增大而减小；利用ANSYS软件对平板与土壤的相互作用进行了有限元建模与分析，表明平板摩擦系数与土壤弹性模量关系不大，而随着表面垂直载荷的增大而减小；平板牵引过程中台车牵引力和仿生曲面控制节点垂直方向位移基本保持不变；利用ANSYS软件对波纹型仿生曲面与土壤的相互作用进行了有限元建模与分析，表明波纹型仿生曲面系数在一定范围内基本不受土壤弹性模量的影响，随着波纹型仿生曲面突起宽度、两相邻突起间距以及表面垂直载荷的增大而减小，但在可信度为90％的前提下，三个因素影响都不显著；首次将波纹型仿生曲面应用于与土壤作用方式以挤压为主的螺旋桩，形成仿生螺旋桩，并与普通螺旋桩进行了沉桩对比试验，表明波纹型仿生曲面应用于螺旋桩桩体表面具有明显的降阻作用。

Results The length between posterior superior iliac spine and greater trochanter of femur was (15.2±1.35) cm for man and (11.5±0.72) cm for woman; the length between posterior superior iliac spine and ischial tuberosity was (13.3±0.87) cm in man and (10.3±0.49) cm in woman; the length between greater trochanter of femur and ischial tuberosity was (8.3±0.83) cm in man and (5.5±0.61) cm in woman; the surface projection where the superior gluteal artery, superior gluteal veins and superior gluteal nerve permeate the suprapitiform foramen was below the point 0～6.8 mm between 2/5 superior and middle trunk from posterior superior iliac spine to greater trochanter of femur; the surface projection where the inferior gluteal artery, inferior gluteal veins and inferior gluteal nerve permeate the infrapiriform foramen was at the point between 2/5 inferior and middle trunk from posterior superior iliac spine to ischial tuberosity; the surface projection where sciatic nerve permeate the infrapiriform foramen was at the point between 3/5 lateral and middle trunk from ischial tuberosity to greater trochanter of femur.

结果臀三角各边的长度分别为：髂后上棘转子间距，男(15.2±1.35) cm，女(11.5±0.72) cm；髂后上棘结节间距，男(13.3±0.87) cm，女(10.3±0.49) cm；转子结节间距，男(8.3±0.83) cm，女(5.5±0.61) cm。臀上动脉、静脉、神经出入梨状肌上孔的体表投影在髂后上棘与大转子连线中、上2/5交界处向下0～6.8 mm内；臀下动脉、静脉、神经出入梨状肌下孔处的体表投影在髂后上棘与坐骨结节连线中、下2/5处；坐骨神经出梨状肌下孔处的体表投影在坐骨结节与大转子连线中外3/5处。

With the experiment, the approximate calculation formulas about the rectangular scanning and the rectangular scanning area are derived.

实验证明了这种通信方式和扫描技术的可行性，为后续研究和实际应用奠定了良好基础。

Two useful formulae for calculating the attenuation constant of conductor loss for TEm0 and TE0n modes of the rectangular waveguide are derived, and the loss characteristic in the rectangular waveguide is analyzed and computed.

根据横向谐振原理和微扰理论，本文提出了一种分析非理想波导损耗特性的新方法，推导出了一组计算矩形波导TEmO和TEOn模导体损耗的衰减常数公式，并分析计算了矩形波导的损耗特性。

The main floor is almost rectangular, the three balconies have modest fan shape in plan, although the balcony facia at each level create a rectangular shape.

正厅池座基本是长方形， 3组眺台的水平截面为扇形，而不同高度的眺台的挑口饰也组成一个长方形。

By Galerkin meshless method, the equations of motion of static rectangular membrane is established. The first ten natural frequencies of the different aspect ratios and the different pull ratios of rectangular membrane with four clamped edges, three clamped edges and one free edge, two opposite free edges and other two clamped edges were calculated. It is feasible and valid to solve the transverse vibration problem of membrane by Galerkin meshless method.

采用伽辽金无网格法，建立了矩形薄膜横向自由振动的运动方程，并对四边固支、三边固支一边自由、一对边固支另一对边自由三种边界条件下，薄膜的不同长宽比及不同单位长度拉力比作用下的矩形薄膜的前十阶固有频率进行了数值计算，结果说明伽辽金无网格法用于求解薄膜横向振动问题是切实可行的。

When n/n=0, the product is the mixture of h-WO3 (hexagonal system WO3) and WO3.1/3H2O, and have a morphology of nanorods; when n/n=0.5 or n/n=l, the product is γ-WO3, and have a morphology of rectangular flakes; when n/n=2, the product is β-WO3, with the same morphology of rectangular flakes.

当n/n=0时，产物为h-WO3和WO31/3H2O组成的混合物，形貌为纳米棒；当飞n/n=0.5和n/n=1时，产物为γ-WO3形貌为矩形片；当n/n=2时，产物为β-WO3，形貌同样为矩形片。

It pointed out pass defect of current rectangular pipe designed by right angle method,raised obtuse angle design method of rectangular pipe pass.

针对现有方矩形管直角设计法孔型的缺陷，提出方矩形管孔型的钝角设计方法。

The major works in this thesis are: The effect of the straight and skew cracks on the vibration properties are studied for the cantilever beam, clamped-clamped rectangular plate, simple-supported rectangular plate and triangular plate. The effect on the natural frequency and vibration mode shapes of the bracket in the presence of cracks is discussed Based on the available index of crack diagnosis, a new index, is proposed.

本文主要的工作有以下几个方面：★研究了工程中常见的悬臂板、四边刚性固定矩形板、四边简支矩形板和三角形板的直裂纹和斜裂纹对振动特性的影响。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。