More than 200 different condition 3d viscosity steady flow fields in the thrust vectoring nozzle at different nozzle pressure ratio and different nozzle area ratio and different geometric defected angle is calculated by the program developed . and the related performance parameters are acquired by numerical simulation 利用该程序计算了某矢量喷管在不同的压比、面积比和几何偏转角下的200多种三维有粘流场，获得了矢量喷管的性能数据。
The engineering constants around the stitch hole in the composite laminate are analyzed using the fdm . it is found that the elastic constants have distinct region character and the traces of the resin - rich pocket in different lamina are clear 采用纤维弯曲模型分析了缝纫复合材料单层在缝纫孔附近的最大纤维偏转角、缝纫影响区以及缝纫复合材料单层及层合板工程常数的变化，发现工程常数具有很明显的区域性，能够看出各层中树脂富集区的痕迹。
In terms of the minimum energy dissipation rate theory , the division angle and deflection angle formulas are derived and applications with some topography data of the pearl river delta waterway are introduced . finally , a 2 - d flow model in the orthogonal coordinates is established 本文从最小能耗率的原理出发，推导分汊河道的分流角、偏转角计算的理论公式，以角度计算公式的变换形式推导分流比公式，并介绍了最小能耗率原理的一些其它应用。
A new type three - roll rotary experimental mill has been designed on the basis of the analysis and investigation with the main technical parameters of the experimental mill designing in detail , such as offset angle , inclined angle and the exit diameter 对试验轧机的主要技术参数偏转角、倾斜角及轧件的出口直径等参数做了详细设计，可以设定不同的偏斜角和倾斜角进行试验，轧制出不同出口直径的轧件，可以对铝、镁、铅、锡合金及其他材料进行试验。
The in - plane equivalent elastic modulus and tensile strength of stitched composite laminates are studied , and it ' s found that the in - plane equivalent elastic modulus decreases with the increase of stitch density , stitch thread diameter , maximal misalignment angle and the distortion width , and the range is about 5 % . the tensile strength of stitched composite laminate increases with the increase of stitch step and decreases with the stitch space . the 研究结果表明：随着缝纫密度、缝纫线直径、最大纤维偏转角和缝纫变形区宽度的增加，缝纫复合材料层合板面内等效模量逐渐降低，最大降幅一般在5 %左右；缝纫复合材料层合板的拉伸强度随缝纫针距的增加而增大，随缝纫行距的增加而降低，因此缝纫密度对拉伸强度的影响程度要看具体的缝纫针距和行距。
Taking no account of the non - uniformity of the detector , this paper analyzed the performance of the traditional four - quadrant angle - measurement algorithm and two other algorithms in calculating the pitch angle and the deflection angle of the incident ray , and also compared the error curve of the pitch angle calculated by each algorithm in the full plane 摘要在不考虑探测器非均匀性影响的情况下，本文分析了传统四象限测角算法和另外几种算法在计算入射光的俯仰角和偏转角时的性能，还比较了在整个平面内各个算法得到的俯仰角的误差曲面。
The distortion of in - plane fibers is considered to be the main reason for the effect of stitching on the in - plane mechanical properties , and the fiber distortion region , the resin - rich pocket and the through - thickness reinforcement section are taken into account . the fiber misalignment angle and the inhomogeneous fiber volume fraction caused by stitching have been determined within the lamina . the elastic constants of a lamina are calculated using a micromechanical model , then the constitutive equations of the stitched composite laminates can be composed 从缝纫孔附近纤维变形的细观结构出发，建立的纤维弯曲模型，以面内纤维的弯曲变形作为缝纫影响层合板面内力学性能的主要原因，同时考虑了纤维变形区、厚度增强区以及树脂富集区的影响，得到单向板内任意一点处的纤维偏转角和纤维体积百分含量。
Cfd is also used to get the data of performance parameters of the nozzle at different nozzle pressure ratio , different nozzle area ratio and different geometric defected angle . the theory of function approximation is used to establish the transient model of thrust vectoring with the data calculated 本文通过cfd计算获得矢量喷管的性能参数，如流量系数、推力系数以及有效推力矢量角等与矢量喷管压比、面积比以及几何偏转角之间的关系数据，并利用函数逼近理论建立了矢量喷管的动态数学模型。
The effects of pitch angle , rolling angle , pad velocity , rotation speed and standard nominal clearance on load and moments were obtained by analyzing the numerical results , and the effects of external load , external moments ( x - axis and y - axis ) , rotation speed and pad velocity on fluid pressure distribution , on tilt angles , azimuth angle and standard nominal clearance are further studied . the reason for the existence of negative pressure in ctp and its effect on the polishing result was discussed . it is proved that ctp can achieve the best 通过对仿真结果的分析,给出了工件倾角、转角、抛光速率、角速度及中心膜厚等主要研抛参数变化时工件的承载能力变化,也即压力积分载荷、压力转矩的变化;分析了外加载荷、 x / y轴转矩、抛光速率、角速度变化对加工过程中工件偏转角、方位角及中心膜厚的影响;讨论了全膜接触模型中负压产生的原因及对研抛结果的影响。
This paper designs an optical system based on above to measure the small angle of the laser beam . a non - polarized beam splitter ( npbs ) is used to split the incident beam into two branches , and a rhombic prism agglutinated by two right - angle prisms is placed to realize total internal reflection twice in each branch . it not only improves the measurement sensitivity and linearity , but also increases antinoise ability by the differential optics 本文正是基于这一原理设计了测量光束微小偏转角的光路系统,用消偏振分光棱镜将入射光分为两路,并在两路分别用两个直角棱镜组成的斜方棱镜来实现两次全内反射,不但提高了测量灵敏度和线性,还利用差分光路的特点提高了抗干扰能力。
