查询词典 phase angle

In order to improve penetrativity of hypersonic missile and enable air-launched hypersonic cruise missile to penetrate with skip trajectory, a new approach of generating positive angle of attack during reentry phase of trajectory was proposed. Some key parameters of realizing skip trajectory were found out, and the effects of these parameters on ballistic performance were discussed.

为提高高超声速导弹的突防能力，使常规布局空中发射的高超声速巡航弹能采用跳跃式弹道突防，采用了在导弹再入段附加相应的正攻角产生气动升力的方法，找出了实现弹道起跳的关键参数，讨论了这些参数对弹道性能的影响。

At first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu-lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band-pass filter, alternating amplifier, phase sensitive demodulatorn, pulse-width modulation, frequency scale circuit, moment current generator. Finally, using the graphics program language LabV-IEW which is designed for testing field especially by NI accomplishes the solfware design of testing system,realized the testing functions.

首先对加速度计及其测试技术的发展历史和现状，液浮摆式加速度计的工作原理和数学模型等作了简要的介绍，然后确定了以二元调宽脉冲再平衡测试回路为设计方案，并从控制理论的角度进行了分析，着重研究了系统中各部分的传递函数，利用系统开环传递函数分析了系统的稳定性，同时设计了系统的校正网络；分析了二元调宽脉冲再平衡测试回路的分辨率、采样约束以及测试精度等基本问题，并按照系统分析的结果设计了包括前置放大、带通滤波、交流放大、相敏解调、脉宽调制、频标电路以及力矩电流发生器等测试系统各部分硬件电路，验证了电路的正确性，最后按照测试系统的要求，采用了美国NI公司专为测试领域所开发的虚拟仪器工具——LabVIEW作为测试软件开发工具，利用该图形化编程语言完成了测试系统软件部分的设计，实现了测试功能。

An amphiphilic graft copolymer was obtained using a macromonomer method and its aggregate behavior and phase structure in aqueous solutions were studied by tensionmetry, polarized micrography, rotation rheometry and small-angle X-ray diffraction.

采用大分子单体法制备接枝型两亲共聚物，通过表面张力仪、偏光显微镜、旋转流变仪和小角X射线衍射研究了两亲共聚物在水溶液中的聚集行为及其相结构。

Liquid crystal ; smectic phase ; small angle X-ray.

液晶；近晶相；小角X光

In this experiment setup, a polarized common-path optical heterodyne interferometer is able to measure the twist angle and untwisted phase retardation of TN-LC very precisely.

实验中所使用到的光学架构，为一极化共光路径光学外差干涉仪，其结合了椭圆仪的概念，以透射的方式，将TN-LC之扭转角以及无扭转相位延迟这两个光学参数，精准地量测出来。

The results are shown as below.1 Tectono-thermal evolution: The history of the Songliao basin is divides into four stages, high-temperature doming and extension, high-temperature rifting, low-temperature depression, and low-temperature shrinkage. Numerical simulation of mechanical process shows that the basin appeared in the early- to late- Jurassic as a result of rapid low-angle subduction of the Pacific plate towards the northwest, of movement of the Siberian block towards the southeast, of many other influences such as internal thermal stress in the mantle, gravitational force, stress of phase transition, etc. Both the Pacific plate and the Siberian block slowed down in the early Cretaceous, and almost stopped in the middle Cretaceous with the rapid decrease of abnormal heat in the mantle below.

盆地构造热演化力源机制数值模拟研究表明：早、中侏罗世至晚侏罗世晚期，盆地演化主要是太平洋块体向北西方向以低角度快速俯冲和西伯利亚块体向东南俯冲共同作用的结果，同时也与地幔内部热力、重力、相变力以及地球自转及公转速度变化效应和上覆块体绝对运动的作用有关；早白垩世早期至早白垩世中期，来自东部太平洋块体俯冲作用的减弱，而这一时期影响盆地演化的主要力源是地幔内部热力、重力、相变力以及地球自转及公转速度变化效应和来自西伯利亚块体俯冲作用；进入早白垩世晚期至晚白垩世早期，由于双重俯冲带中西侧俯冲作用带基本停止活动，而本区地幔热能的快速衰减则控制盆地的构造热演化；晚白垩世晚期以后，太平洋块体活动加强和地幔热运动是影响盆地演化的主要动力。

Moreover, the effect of phase mismatching coefficient on the allowed angle was also discussed.

在允许的相位失配范围内，研究晶体长度对转换效率的影响。

DM the three-phase embedded electrode salt bath is the rectangular structure, the outer covering welds by the angle steel and the steel plate, in puts in gallbladder which the steel plate makes, in the gallbladder is uses sets up the salt bath which the brick and the standard brick compose, in the gallbladder is mainly uses in preventing outside the fused salt permeating heat insulating layer and the salt bath, when salt bath damage is advantageous hangs the repair.

DM型三相埋入电极盐浴炉系长方形结构，外壳由角钢及钢板焊成，内放钢板制成的内胆，内胆中是采用立砖及标准砖组成的盐槽，内胆主要是用于防止熔盐渗入保温层及盐槽外，当盐槽损坏时便于吊出修理。

A differential demodulation system of Laser Doppler is designed. Phase grating is adopt to obtain same intensity measured beams with big separative angle in the system,and by focusing the waists of two Gauss beams on the measured object with extender and collimating lens group, the smallest speckle and the superposition of plane waves are obtained.

设计了一种差动检波系统，采用相位光栅获得同光强、大夹角的测量光束，用扩束准直透镜组使两束高斯光束的束腰聚焦在被测物体上，得到最小光斑和平面波的叠加。

The sum of drift angle of two opposite rotating spiral waves at fixed phase differences is equal to .

在相同偏振电场模式下，顺、逆时针旋转螺旋波产生的漂移角度之和等于。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。