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narrow beam radar 窄波束雷达
I lit the smoke with a narrow beam of light. 我用一个小光柱点燃了烟。
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。
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
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。
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。
electronically scanned stacked Beam radar 电子扫描迭加波束雷达
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。
Electronically Scanned Stocked Beam Radar 电子扫描储存波束雷达
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 energy salvos and counter-salvos sent narrow beams of blindingly bright light and streams of angry red-orange annihilation disks skewing through the blackness. 能量武器和防护武器不停发射，道道刺目的亮光和愤怒的橙红色湮灭光弹流在黑暗中斜穿交错。
The road is too narrow to allow the passage of gondola. 这条街太窄，大型货车不能通过。
narrow beam linear attenuation coefficient 窄(X线)束线性衰减系数
She performed on the balance beam with much grace. 她在平衡木上表演得非常优美。
The mountain path is narrow and rugged. 狭隘的山路崎岖不平。
The travelers edged warily along the narrow road. 旅游者沿着狭窄的小路小心前行。