In order to receive omnidirectional low-SNR signal of whole HF band, we present an adaptive omni-direction & narrow-beam receiving antenna array.
为了实现对短波频段全空域低信噪比信号的良好接收,本文提出了一种窄波束全向接收的自适应天线阵。
The authors propose a method of using transmit narrow-beam to spatially concentrate the radiation energy on dominant path and suppress undesired paths in the shortwave communication.
提出在短波通信中利用发射端窄波束,在空间上将能量集中于主路径且抑制其他路径来改善多径信道环境;
Moreover, engineers have worked out how to make laser beams more intense by using short lengths of optical fibre to narrow the beam.
此外,工程师们还通过光纤的短长缩小了传送的光束,由此找到了让激光传送器能源更加密集的方法。
Take laser transmission, for example. "High powers concentrated in a narrow laser beam could cause serious damage to a person, " says Karalis.
拿激光传输来说,卡拉里斯就称:“大量能量聚集成一束狭窄的激光束,可能会给人造成严重伤害。”
The technology works by focusing sound into a narrow beam, just like light.
这项技术的原理是将声音压缩成类似于光的窄束。
For this effect, we're going to use a very soft, narrow beam, so go under the Style pop-up menu at the top of the dialog (this is where the presets are) and choose Flashlight.
为了这个效果我们需要用到一个很窄的柔化光束。所以在对话框顶部的样式选择菜单中点选手电筒效果。
In other words, ultrasound essentially travels in a very narrow beam — this makes it great for focusing the waves toward a desired area, but not for actual aural comprehension.
换言之,基本上超声波的传播声束极窄,这非常有利于将声波集中至指定地点,但对实际听力则无所助益。
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。
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。
At one chateau, as we descended a narrow spiral staircase, we both remarked-almost simultaneously-that the staircase sagged inward toward its central support beam.
在一个城堡里,我们正沿着很窄的螺旋楼梯往下走,这时,螺旋楼梯突然向中心支撑柱子方向凹陷,我们几乎不约而同地喊了起来。
Combined wave beam guardrail can be used in narrow central separation belt.
组合波形梁护栏可在窄中央分隔带上使用。
The transmission signal of a narrow beam irradiated on a flow particle system may fluctuate.
窄光束照射流动颗粒系时,透过率会产生起伏。
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。
Also, they can be easily adapted to be used in spotlight, even the ones with a narrow beam Angle of between 15 and 25 degrees.
此外,他们可以很容易地适于在聚光灯中使用,即使使用的度15和25之间的窄光束角的那些。
Narrow molecular beam (water molecules group), adjusting the molecular structure of volatility.
缩小分子束(水分子集团),调整分子结构波动。
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。
Auxiliary cage into wellhead is to wide, narrow cage into the shaft at the wellhead and disposal of solid card box at the wellhead end of the beam.
副井井口罐笼置入就是将宽、窄罐笼于井口处置入井筒并卡固于井口底框梁上。
Dual beam PLUS: Get the best of both worlds, with selectable narrow and wide beams you can view individually, or melded into one display.
双波束输出:它拥有世界上最好的可选择的宽波束和窄波束探测系统,你可以把图像单独或一起显示在屏幕上。
These included climbing trees, running barefoot and crawling along a narrow beam.
这些活动包括爬树,赤脚跑步和沿着一根狭窄的木道爬行。
Because of the accuracy requirements of tracking radar, the beam width is very narrow.
跟踪测量雷达因其精度要求,波束宽度很窄。
This laser beam covers a very narrow range of frequencies.
这种激光束的频率范围很窄。
To narrow the molecular beam (water group), adjusting the molecular structure of volatility.
缩小分子束水分子集团,调整分子结构波动。
This paper regards narrow fan-beam scan mode as multi-detector parallel beam scan mode.
本论文将窄角扇束扫描看成是多探头的平行束扫描。
The image reconstruction of industrial X-CT belongs to image reconstruction with narrow fan-beam scan mode.
高能X射线工业CT机的图像重建属窄角扇束扫描方式下的图像重建。
Yttriated Tungsten is primarily used in military and aviation industry with narrow arc beam, high compressing strength, highest welding penetration at medium and high current.
钇钨电极在焊接时,弧束细长,压缩程度大,尤其在中、大电流条件下溶深最大,目前主要用于军工和航空航天工业。
Yttriated Tungsten is primarily used in military and aviation industry with narrow arc beam, high compressing strength, highest welding penetration at medium and high current.
钇钨电极在焊接时,弧束细长,压缩程度大,尤其在中、大电流条件下溶深最大,目前主要用于军工和航空航天工业。
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