back scattering 中文意思是什麼
back scattering
解釋
背散射- back : n 1 背，背部；背脊；背面，反面；背後，後部，後面，裏面。2 （指）甲；（刀）背；（手）背；（書）背...
- scattering : adj. 1. 分散在不同方向的，分散在不同范圍的。2. 廣泛擴散的。3. （選票）數量分散的，不集中的。n. 1. 散亂。2. 在媒介質中的散播。3. 【物理學】散射。adv. -ly
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Rutherford back scattering spectroscopy ; rbs spectroscopy
盧瑟福背散射譜法 -
Design the system of detection and data acquisition and transmission of compton back - scattering imaging scanner, provide some important indexes and methods that are used to assess this system
介紹了閃爍計數管探測器的工作原理。提出了考核該系統性能的重要指標及考核的具體方法。 -
Design the scanning movement control unit of compton back - scattering imaging scanner, mainly point out the control targets clearly, describe the control principle, etc. discuss the features and technical indexes of this unit
明確指出了該子系統的控制對象，闡述了控制的原理，根據工作要求確定電機及驅動模塊的型號。論述了該系統的性能特點與技術指標。 -
Design the software of compton back - scattering imaging scanner, point out the functions of this software. give out the program modules in which the directory and contents of this software is included. give out the interfaces of the main program modules and describe the meanings of operating elements on these program interfaces briefly
指明了本應用軟體的功能，主要是控制三維掃描運動和源的工作位置、數據採集和處理以及文件管理和幫助等;給出了程序結構模塊，從中列出了軟體所含的主要目錄;給出了幾個主要的程序模塊的界面，簡要說明了界面中各操作對象的含義。 -
Do some necessary calculations and decide on the general scheme of compton back - scattering imaging scanner to the real wall inspection. include the selection of radioactive source, the calculation of compton back - scattering beam, the calculation of the basic condition of finding out the different materials and the determination of some important parameters as well. 3
其主要內容包括入射源的選擇，散射粒子的理論計算，發現異物的最低條件計算以及系統的一些重要參數的確定，主要包括：放射源的選擇，散射角的確定，后準直器的形狀與尺寸，前準直器的尺寸，前準直孔的大小，檢測器的種類與型號，檢測器的效率等。 -
Compton back - scattering is a new type of non - destructive inspection technology
康普頓背散射（ comptonback - scattering ）技術是一種新型的無損檢測技術。 -
Back scattering wave
反向散射波 -
Back scattering angle
反向散射角 -
The light back - scattering property has been developed primarily
摘要對水中氣泡後向光散射特性進行了初步的定性研究。 -
The effects of meteor trails scattering on a back scattering beyond - light - of - sight radar detected distance and probability of detection are creatively calculated in theory. it is practicable worth for analyzing the performance of the electronic systems
本文第一次從理論上研究了流星余跡散射對電子系統性能影響，這些結果對研究突發通信系統和超視距雷達系統等電子系統的性能都有一定實用價值。 -
Back scattering factor
反向散射因數 -
Back - scattering gauge
反向散射測量計 -
Effect of atmospheric back - scattering ratio on measurement of wind velocity
大氣後向散射比對風速測量的影響 -
Mainly its disadvantage is that the back - scattering beam is very weak, that the signal - to - noise ratio is lower
但該技術存在一些不足之處，主要是背散射信號微弱，檢測困難。 -
This paper has studied the mean attenuation, scattering, and back scattering cross sections of groups of small rotating spheroids about characteristics of microwave scattering when their rotatory axes are oriented at random in any direction in 2d plane and 3d space respectively under the condition of normal distribution, and that those physical quantities are changed with different variance, expectation and wave lengths of incident electromagnetic wave
本文研究旋轉軸方向分別在平面內和空間中隨機取向呈正態分佈時的小旋轉橢球粒子群的平均衰減截面、平均散射截面、平均後向散射截面等微波散射特徵，以及這些物理量隨軸向分佈期望、方差及入射電磁波波長的變化。 -
In the end, the theory of fractal geometry is applied to the waves propagation and scattering in atmospheric turbulence, and the first and second order moments of the scattering fields are derived by considering the effects of the fractal atmospheric turbulence. the normalized back - scattering radar cross section of a perfectly conducting disk is calculated. the influence of fractal dimension of atmospheric turbulence on the radar cross section is analyzed
本文最後將分形理論引入到湍流大氣中的波傳播和散射領域，導出了分形大氣湍流中光滑導體目標散射場的一階矩和二階矩，以光滑導體圓盤為例研究了湍流大氣的分維對導體目標後向散射截面的影響。 -
Aiming at the change of the traditional sediment measurement method, a new equipment, called infrared back - scattering sediment instrument, is introduced, it can measure the real - time sediment content continuously
為改進環形水槽的傳統測沙技術，自主研發完全開放式的實時在線測沙儀器，力求在水槽中實驗水樣的自然流態下實時測量垂線懸浮泥沙含量。 -
According to the application theory of compton back - scattering that the writer had researched, he developed and produced its portable application devices successfully. after the experiment and on - the - spot application, its efficiency is as good as even better than the design indexes. it could be widely used in the areas such as the engineering, the military, the police and the customs
7 .研製成功了具有自主知識產權的便攜式康普頓背散射成像儀，經實驗及現場試用，其性能達到設計目標的要求，該儀器在工程、軍事、公安、海關等領域中有較廣闊的應用前景。 -
By driving expressions and using the method in numerical integration, the results of numerical calculations are analyzed, discussed and contrasted with different conditions, and they showed that there are evident differences in the mean attenuation, scattering, and back scattering cross sections of oblate spheroid particles when the variance is so small that it is near to zero namely it is the same as the rotatory axes are parallel with one direction and when h - polarized and v - polarized incident waves happened. these differences are depended on the relative differences in the average orientation of rotatory axes and the polarized directions of incident wave
通過公式推導和數值積分計算並對結果做了討論和分析，對比各種情況表明：扁橢球粒子群在方差很小接近為0時，與粒子群旋轉軸一致取向的情況相同，入射波水平極化和垂直極化時的平均衰減截面、平均散射截面、平均後向散射截面有明顯的不同，這決定於旋轉軸平均取向和入射波極化方向的相對差異。 -
Analysis of ultrasonic back - scattering microstructures feature of human kidney based on wd cepstrum
倒譜法分析人體腎組織的超聲散射微結構特徵
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