查询词典 diffraction angle

The design principle of the laser receiver with wide FOV for the laser command guidance and laser-beam riding guidance is introduced. A mathematic model of receiving light field is presented. The formula for the viewing angle of the detecting optical system was derived according to the diffraction light field of the oblique incidence parallel light. Taking a detecting optical system with the collecting objective for example, the design characteristic that the receiving optical system needs not only an extra large relative aperture but also an unvignetting receiving performance is discussed on the premise of meeting the requirement of 1064nm WFOV laser receiver.

介绍激光指令制导和激光驾束制导的大视场激光接收机的设计原理，给出接收光场的数学模型，由斜入射平行光的衍射光场推出探测光学系统的视场角公式，根据1064nm大视场激光接收机技术要求，以聚光物镜型探测光学系统为例，探讨接收光学系统既须具备特大相对孔径，又须具备无晕接收性能的设计特点，采用窄带干涉滤光镜进行光学滤波降噪。

A method to measure the absolute velocity is developed in a spectral domain ODT system,where Doppler angle is determined by combined information on the measured Doppler shift and Doppler bandwidth,and then the flow velocity is determined from Doppler angle and Doppler shift.

发展了基于谱域ODT技术的绝对速度测量方法，该方法综合运用多普勒频移和多普勒展宽信息实现多普勒夹角的确定，进而实现流体绝对速度的测量。

The parameters optimization design model is proposed, which is based on a control model with the quasi-Euler angle, Euler angle velocity and absolute angular velocity as the feedback. The vibration-resistance parameters of the given controller are chosen as the optimization variables, and the on-off times of the engines is chosen as the optimization objective function.

基于一类采用拟欧拉角、拟欧拉角速度和飞行器绝对角速度为反馈信号的姿态机动控制模型，以其消振参数为优化变量，开关次数为优化指标，建立了姿态机动参数优化模型。

We have swept the world in 3D adventure game "Tomb Raider 2" in the graphic as an example, in Figure 1 due to the closure of a 3D accelerator card on the "Perspective angle amendment" function, the stone figures of the ground stations at a severe bend lines deformation; and plans to open a 3D II Accelerator on "Perspective angle amendment" feature, stone ground lines should be maintained and the actual results.

我们以风靡世界的3D 冒险游戏《古墓丽影2》中的图形为例，在图一中由于关闭了3D 加速卡上"透视角修正"功能，人物所站的石板地面线条出现严重的弯曲变形；而图二中打开了3D 加速卡上"透视角修正"功能，石板地面线条便保持了真实的效果。

Results:Sharp angle was decreased and acetabulum forward rotation angle increased in two kinds of osteotomy.

结果：两种截骨方法术后Sharp角均减小，髋臼向前旋转角度均增大，统计学上有显著差异(P＜0.05)。

When thecohesion and angle of internal friction is fixed ,the layer failure area becomessmaller with increase of shocrete layer's thickness.also the shotcrete layer has acritical thicknesswith the change of cohesion and angle of internal friction ofshotcrete'sinterface.

初喷接触面粘聚力和摩擦角强度一定时候，初喷破坏区随初喷厚度的增加而减少；接触面强度变化时，初喷存在一临界厚度；初喷破坏区主要集中在节理与洞周的相交处。

Because it is suddenly, and the angle is closed, so called closed acute angle glaucoma.

因为是突然发生，而房角是闭锁的，故称为"急性房角闭锁性青光眼"。

ANGLE OF INCIDENCE, The acute angle which the wing chord makes with the longitudinal axis of the aircraft.

安装角，飞机的纵轴与机翼弦线所形成的锐角。

The flexion angle of the first swing of the leg is defined as the acute angle.

角度的测量借助录像/电子角度计/等速运动仪器进行（Bohannon 1986年）。

ANGLE OF INCIDENCE, The acute angle which the wing chord makes with the longitudin

附件齿轮安装角，飞机的纵轴与机翼弦线所形成的锐角

The teacher likes the honeymouthed little girl very much.

老师很喜欢这个嘴甜的小姑娘。

Mr. Notker Bien's interests are traveling, spending quality time with the family and long-distance-running.

诺特卡·柏恩先生热爱旅游，长跑，以及和家人一起共度美好时光。