narrow beam
英 [ˈnærəʊ biːm]
美 [ˈnæroʊ biːm]
网络 窄光束; 窄束的概念; 窄束; 窄波束; 一束窄光子射束
双语例句
- He then shines a narrow beam in horizontally through the pinhole.
然后他通过小孔水平地射入一窄光束。 - The rest of the Wilkins ice shelf, which is about the size of Connecticut, is holding on by a narrow beam of thin ice.
威尔金斯冰架的面积相当于康涅狄格州，其所剩的部分由一个狭窄的薄冰梁柱支撑。 - Perhaps it may even be able to throw a narrow beam of light into those dim corners of the mind where great paintings exert their power.
也许，它还会在我们深受伟大画作感动心灵的暗处，投下一道微光呢！ - A Method of Increasing the Coherence Bandwidth on Shortwave Channel Using the Narrow Beam Forming
一种利用窄波束成形提高短波信道相干带宽的方法 - The fact that these jets remain collimated in a narrow beam over such great distances suggests that magnetic fields may be involved.
这些喷流在如此长的距离中仍能保持直准的狭窄粒子束，暗示了磁场可能在其中扮演重要的角色。 - The emphasis in this paper was corner reflector antenna with high-gain, narrow beam and low side-lobe.
选用方向性好、增益高、旁瓣低的角形反射器天线作为本论文的研究重点。 - Parabolic antenna in a widely used is tracking antenna area, By use the optimum design, it may produce a very narrow beam, it's tracking precision is high, but because it's beam width is very narrow, the searching target is very difficult.
抛物面天线是火控雷达中普遍使用的一种跟踪天线，通过系统优化设计，可以形成很窄的波束，所以其跟踪精度很高，因为其波束很窄，所以搜索发现目标困难。 - General form of Airy stress function for rectangular narrow beam carrying distributed load
矩形截面窄梁受分布载荷时Airy应力函数的一般形式 - A New Method for Interferogram Scanning with Polarized Light Modulation in Narrow Beam
一种细光路偏光调制实现干涉条纹扫描的新方法 - Comparing with the traditional He Ne laser narrow beam collimating method, it has the advantages of the less influence of air disturb, minor light beam drift and high stability of the datum line.
与传统的He－Ne激光细光束准直法相比，这种方法受大气扰动的影响小，光束漂移小，准直基线的稳定性好。 - The key technique in optical communications is the narrow beam orientation. According to the small-angle measurement theory of laser alignment system divergence, an accuracy and high-speed measuring method using Charged Couple Device ( CCD) is proposed to measure far-filed focus facula.
根据激光发散角经准直后的微小角度的测量理论，提出了采用远场焦斑和CCD进行快速准确的测量方法，最后实际测出了激光准直后的远场发散角。 - This paper gives an an illustrational proof to beam intensity distribution for narrow beam of rectangular cross section, and presents an accurate expression to calculating beam intensity.
本文对截面为矩形的窄束给出束强分布的图解法证明，并提出计算束强的精确公式。 - Calculation of narrow beam γ ray mass attenuation coefficients of absorbing medium by Monte Carlo method
蒙特卡罗方法计算介质对窄束γ射线的质量衰减系数 - A set of narrow beam gamma ray TCT equipment is described.
描述一台低能窄束γ射线TCT装置。 - In order to study the depth detecting ability of optical coherence tomography ( OCT) system for highly scattering biological tissue with infinitely narrow beam, an OCT system based on Monte-Carlo simulation model was introduced and applied.
为了研究光学相干层析术（OCT）系统在细直光束下对高散射生物组织的深度探测能力，介绍并应用了一种基于蒙特卡罗仿真方法的OCT模型。 - Through changing the seeker frequency from microwave to millimeter adaptively in order to distinguish guide radar and decoys by the narrow beam width of active millimeter wave seeker, the radar and decoys are destroyed.
通过改变导引头的工作频率使之由微波波段适时跳变到毫米波波段，利用主动毫米波导引头的窄波束分辨目标，直接摧毁敌方的雷达或诱饵站。 - The results show that it is feasible for Monte Carlo method to calculate narrow beam γ ray mass attenuation coefficients of absorbing medium.
结果显示用蒙特卡罗方法计算介质对窄束γ射线的质量衰减系数是可行的。 - The absorption of~ ( 60) co narrow beam γ-ray in optical glasses& on the relationship between linear absorbing coefficient, lead equivalent and density
光学玻璃对~（60）Co窄束γ射线的吸收&论玻璃的线性吸收系数、铅当量和密度间的关系 - Chapter 3 obtains the retrieval of parameters of wind above sea surface and ocean wave spectra from simulated narrow beam HF radar backscatter, gives the simulate results.
第三章通过数值模拟的窄波束高频（HF）雷达的海面回波多普勒谱，反演了海面风场、浪高谱等海态参数，并详细介绍了反演的方法、步骤，给出了模拟结果。 - Because it is difficult to make narrow beam in elevation, high frequency radars ( both surface-wave and sky-wave) do not have altitude measurement ability and lack target altitude information as a result.
由于高频段构成仰角窄波束困难，高频雷达（地波和天波）不具备测高能力，因此一贯缺乏飞行目标高度信息。 - Radar target azimuth information is obtained by the antenna beam scanning, the radar antenna azimuth resolution depends on the horizontal beam width, if it is a narrow beam, you can get high resolution.
雷达目标的方位信息是由天线波束扫描得到的，雷达方位分辨率取决于天线的水平波束宽度，如果是窄波束，就能得到高分辨率。 - Narrow beam of single-energy rays, in penetrating the material, its strength will be reduced. This phenomenon is known as-ray absorption.
单能的窄束射线，在穿透物质时，其强度会减弱，这种现象称为射线的吸收。 - In this context, SAR systems could be divided into two groups: narrow band and narrow beam ( NB) SAR, and ultra wideband and ultra wide beam ( UWB) SAR.
于是，SAR系统可以分为两大类：窄带、窄波速（NB）SAR和宽带宽波速（WB）SAR。 - Compared with microwave communication, space optical communication has much superiority: much greater communication capability, narrow beam, good direction, much greater power density functions, lesser antenna size and whole mass, and high capability of anti-electromagnetism and secrecy.
与微波通信相比，空间光通信具有很多优点：通信容量可以显著增大；发射光束窄、方向性好，功率密度显著增加；天线尺寸小，系统质量相对小；抗电磁干扰，保密性强等等。 - Experiments show that the responsivity of photometer with diffuser is not uniform, and some LEDs have a narrow beam angle or irregular intensity distributions.
实验表明，带有光漫射器的光度计其响应度的均匀性很差。 - Marine CW radar transceiver antenna should be compact and have narrow beam width, light weight and high isolation.
船用连续波雷达的收发天线不但波束宽度窄，而且结构紧凑、重量轻、隔离度高。 - Excellent array antennas with narrow beam and low sidelobe are designed.
设计了高性能的窄波束低副瓣阵列天线。 - And, according to the analysis of the partition of high resolution range and angle measurement of monopulse, linear frequency modulation signal with wide bandwidth can enhance the range resolution of imaging; while antenna with narrow beam can enhance the azimuth resolution.
同时，根据对高分辨距离单元划分及单脉冲测角的分析可知，采用宽带线性调频信号可以提高图像的距离分辨率，而窄波束天线能够提高图像的方位分辨率，这些结论都在仿真中得到了验证。 - The signals cannot form narrow beam in space, but wide beam.
由于信号具有正交性，在空间不会形成高增益的窄波束，而是形成低增益的宽波束。