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- radar wave attenuation 雷达波衰减
- Influence of Acoustic Wave Attenuation on the Properties of Fiber AOTF[J]. 引用该论文 厉群;刘小明;李佟;金韬;周炳琨.
- The millimeter wave attenuation of expanded graphite is a comprehensive actions of scattering and absorption. 膨胀石墨蠕虫对毫米波的衰减为散射和吸收作用的综合结果。
- Wave attenuation properties of rectangular pontoon breakwater were analyzed with eigen-function expansion. 利用特征函数法对矩形浮箱式防浪堤的消浪性能进行分析。
- The transponder detects incoming radar signals and broadcasts an amplified, encoded radio signal in the direction of the detected radar wave. 这个装置将检测接收到的雷达信号,并向收到信号的方向发射大波幅编码雷达信号。
- In this method, Stoneley wave attenuation from AC log is divided into two parts: attenuation through porous media and percolation attenuation through pore-fluid. 该方法把由声波测井数据得到的斯通利波衰减分为介质内衰减和孔隙流体渗流衰减两部分。
- On the base of inducing the physical modeling similarity criterion of radar wave, we designed and made a sand model, and did the experiment of monitoring oil and gas pollution. 在推导雷达波模型实验的相似性准则的基础上,制作了砂质模型,并以原油为污染材料进行了探地雷达监测油气污染的模型实验。
- We confirm the accuracy and applicability of the ground penetrating radar to be used to estimate mean volumetric water content in soil profile after radar wave velocity analysis. 分析雷达波在土壤中传播速度的变化,明确基于探地雷达的土壤剖面平均含水量测定方法的适用性和准确性。
- Ultrasonic wave attenuation measure is an important method of researching the energy absorptance of rock. It relates with the variation of rock microcrack and is one of subjects to be researched continuously in rock area . 声波衰减是研究岩石能量吸收性质的主要方法,它与岩石内部微裂纹及其变化有着密切联系,是岩石领域需要深入研究的课题之一。
- It is also shown that there is a minimum shothole depth for given conditions including thickness and lithology of shot layer, low end frequency of effective signal, and wave attenuation steepness in time domain. 结果表明 ,对给定的激发层厚度、岩性、有效信号低端频率和波的时域衰减陡度 ,存在一个最小井深 Hmin。
- Fourier-transform-infrared(FTIR) and millimeter wave(MMW) are applied to study the ele- ctromagnetic waves attenuation by the aqueous foams. 摘要 采用傅里叶变换红外透射光谱法和毫米波反射截面及透射率法,研究了水基泡沫的电磁波衰减性能。
- Based on conversion of radar measurement parameters from geodetic coordinates to space coordinates,a method is presented for calculating earth radius corresponding to any point on radar wave. 本文通过雷达测量参数和大地坐标与空间坐标的转换,给出了计算雷达电波射线上任意一点对应地球半径的方法。
- Their method exploits the fact that water vapour changes the speed at which radar waves travel though air. 这句我觉得是:他们的方法揭示了水蒸汽会改变雷达波穿过大气的速度的事实。
- Like light and radar waves, microwaves usually bounce off objects, making them visible to instruments and creating a shadow that can be detected. 就象光波和雷达波一样,通常微波遇到物体就会反射回来,因此通过设备就能看到物体的成像,或是留下能被探测到的影子。
- First, Through the test studies of the interaction of radar waves that are reflected from rebar groups, we get some instructional experiences. 本文首先研究了各种相邻钢筋对雷达波的干扰问题,得出了一些有指导作用的经验。
- A reflected wave received by a radio or radar. 反射波收音机或雷达接收到的反射波
- They picked up the yacht on their radar screen. 他们在雷达屏上看到了那艘游艇。
- The thicker the shell of a warhead, the larger the attenuation exponential, and more promptly the peak pressure of explosive air shock wave attenuates with the distance. 结果表明,爆炸空气冲击波峰值随距离的衰减指数与壳体厚度近似成线性关系。
- The researchers, some based at Imperial College London, have even created a prototype material capable of cloaking objects against radar waves as proof of their theory. 这些研究人员中的某些是在帝国理工学院工作,他们甚至创造了一种能遮蔽物体使之不反射雷达波的原型材料,作为他们的理论证据。
- However, radio waves attenuate as they move out from the transmitting antenna. 然而,无线电波随者从传送的天线向外移动而衰减。
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries