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- narrow beam divergence 窄光束发散
- I lit the smoke with a narrow beam of light. 我用一个小光柱点燃了烟。
- 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。
- A thin line or narrow beam of light or other radiant energy. 光线，放射线极细的一条或极窄的一束亮光或其它辐射能
- The Cassegrainian unstable resonator has been demonstrated to be one of efficient means to decrease the OPO beam divergence. 证明了望远镜型共焦非稳谐振腔是压缩OPO光束发散角的有效方法。
- Beam Divergence As through the air telecom signal go further, they diverge. Beam divergence measures that divergence. 波束发散度当电信信号穿过空气向前传播时,信号将发散。波束发散度用于衡量这种发散。
- By giving the optimum reflectance finesse, the maximum beam divergence and minimum aperture of the Fabry-Perot interferometer can be obtained. 由最优反射精细度可得到入射到标准具光束的最大发散角和标准具的最小通光口径。
- According to acquisition and tracking strategy and laser detection theory, an expression of the best angle of beam divergence under direct detection is provided. 根据捕获跟踪策略和激光检测理论,给出了直接探测情况下最佳光束发散角的表示式。
- A high-power laser beam colliding with a high-energy electron beam produces a narrow beam of gamma rays. 高功率雷射束与高能电子束相碰时，会产生一束极窄的伽玛射线。
- 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。
- The rest of the Wilkins Ice Shelf, which totals about 14,500 square kilometers, is holding on by a narrow beam of thin ice. 总面积约在14500平方公里的威尔金斯冰架的其他部分正在支撑着一条狭长的薄冰。
- It is used in the measurement of ranging accuracy,maxmun and minimum ranges,pulse energy,pulse width,repetitive frequency features,beam divergence and optical axis stability of LRF. 主要检测测距机的距离准确性、最大及最小测程、脉冲能量、脉宽、重频特性、束散角及光轴稳定性等。
- The results show that the effects on the output laser wavefront of the FADW are mainly the beam deflexion and the beam divergence, the other high-level wavefront errors are very low. 结果表明，自由旋涡气动窗口对输出激光波前的影响主要是光束偏转和离焦，特别是气动窗口工作在设计状态时，其余低阶及高阶像差都比较小，能够满足实际需要。
- 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。
- However, entrainment can, if applied with appropriate power and frequency, seriously degrade the ability of targeted people to function, and by using the higher radio frequencies, can be focused into a fairly narrow beam. 不过，诱导作用可以，如果应用适当的功率和频率，可以严重退化目标人群的身体机能，并采用较高的无线电频率,可以集中到一个相当狭窄的光束。
- Radar sets generally employ large antennas to produce narrow beams in much the same way as a search-light reflector. 通常雷达采用大型天线以产生狭窄波束,其方法基本上与探照灯反射镜相似。
- The narrow beams of sound advertise sale items at the store or restaurant and feature promotional material. 这个狭窄的声音柱在商场或餐馆做广告销售商品并播放促销内容。
- This is because even though all the raindrops out there are reflecting rainbow colors, they do so in very narrow beams. 这是因为即使所有的雨滴都在反射出彩虹的颜色，它们也是在非常窄的光束下反射的。
- The road is too narrow to allow the passage of gondola. 这条街太窄，大型货车不能通过。
- The mountain path is narrow and rugged. 狭隘的山路崎岖不平。
