背向散射 的英文怎麼說

中文拼音 [bēixiàngsǎnshè]
背向散射 英文
back scattering
  • 背 : 背動詞1. （用脊背馱） carry on the back 2. （擔負） bear; shoulder
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 背向 : back on
  • 散射 : [物理學] [電學] scattering; radio scattering; scatter; dispersion
  1. The efficient sppc had been performed with 1 - hz - repetition - rate 532nm nanosecond pulses, in which phase conjugate reflectivity as high as 21. 5 % was obtained. when sppc were operated in ce : batio3 with 532nm, 632. 8nm and 790nm cw lasers, the maximum sppc reflectivity of 54. 1 %, 88. 2 % and 80. 5 % were obtained, respectively. unlike the results reported before that four - wave mixing by stimulated photorefractive backscattering ( spb - fwm ) only exists at short wavelengths while four - wave mixing by total internal reflection ( tir - fwm ) only exists at long wavelengths, both of these two mechanisms coexist at all wavelengths from 532nm to 790nm in our experiments

    通過大量的實驗全面研究了ce ： batio _ 3自泵浦位相共軛特性：在低重復頻率（ 1hz ） 、 532nm調q激光泵浦時最高獲得了21 . 5的位相共軛反射率，而此前報道過的建立位相共軛脈沖光最低重復頻率是10hz ；實驗中發現在532nm 790nm波長范圍內，在不同的波長激光泵浦時，同時存在兩種自泵浦位相共軛機制：全內反射?四波混頻（ tir - fwm ）和受激背向散射?四波混頻（ spb - fwm ） ；在連續激光泵浦時，對532nm 、 632 . 8nm和790nm三種波長，最高分別獲得了54 . 1 、 88 . 2和80 . 5的位相共軛反射率；同時還研究了自泵浦位相共軛光的時間穩定性。
  2. A method for estimating the intensity of underwater laser backscattering based on the concept of equal phase volume

    基於等相位體概念的水下激光背向散射強度的估算方法
  3. The rain area is regarded as a random background medium, and the scattering field and backscattering matrix of the cylinder target in rain are gained. in the coherent case, the power of cylinder target in rain and air and their optimum polarization states are studied by the three - step method

    在研究雨中目標時，本文把雨區看成隨機的背景介質，利用波傳播理論、目標的邊界條件，得出介質圓柱在雨中的散射場、後向散射矩陣，並進行了相關計算。
  4. The judge, whose eyes had gone in the general direction, recalled them, leaned back in his seat, and looked steadily at the man whose life was in his hand, as mr. attorney - general rose to spin the rope, grind the axe, and hammer the nails into the scaffold

    法官收回了適才散射的目光，向椅背上一靠，目不轉睛地望著那青年-那人的性命就摸在他手心裏。此時，檢察長先生站起身來，絞起了絞索，磨起了斧頭，把釘子釘進了斷頭墩。
  5. Study of raman scattering of plastic optical fiber

    光纖中放大的背向自發拉曼散射的增益特性
  6. Thirdly, some key technologies of optical layer protection such as fault monitoring, location, switching corporation, protection switching time were studied in chapter 3, a method of optical power monitoring for primary path and otdr monitoring for protection path was provided

    隨后研究了光層保護的網路故障監測、倒換判椐、故障定位、倒換協調、保護倒換時間等問題，提出了主通道光功率監測、備用通道背向散射曲線監測的故障監測方法。
  7. Chapter 7. the theoretical model of rayleigh optical frequency domain reflectometry is presented, and the fully distributed microbending loss optical fiber sensor on base of this model is studied

    第七章，研究了rayleigh光頻域背向散射理論模型，和基於該模型的全分散式光纖微彎損耗傳感器系統。
  8. Chapter 8. the fully distributed optical fiber sensor system on base of raman and rayleigh optical frequency - domain reflectometry to measure microbend and temperature simultaneously is developed

    第八章，研究了基於rayleigh光頻域背向散射和raman光頻域背向散射理論同時測量微彎和溫度分佈的全分散式光纖傳感器系統。
  9. There may be unreal peaks on backscattering signal curve in themeasurement of optical fiber links by otdr

    用otdr測試光纖線路時，其背向瑞利散射信號曲線上常出現幻峰。
  10. Study on the eprirubincin - induced cardiotoxity in breast cancer patients by integrated backscatterand

    應用背向散射技術評價乳腺癌患者表阿黴素心臟毒性的價值
  11. Diagnostic value of integral of dorsal acoustic scattering for acute viral myocarditis in children

    背向散射積分在小兒急性病毒性心肌炎診斷的中價值
  12. The value of the ultrasonic integrated backscatter in diagnosis of children with acute viral myocarditis

    背向散射積分在小兒急性病毒性心肌炎中的診斷價值
  13. Ultrasonic backscattering from a laplacian distributed rough surface

    拉普拉斯分佈表面超聲背向散射的研究
  14. Determination of elastic constants of cylindrical solidsusing backscattering amplitude spectrum

    用超聲背向散射譜定征柱狀固體的彈性常數
  15. The self - q - switched pulses of high erbium - doped fabry - perot cavity fiber laser are observed and theoretically analyzed. ( 2 ). utilizing the non - linearity characteristics of single mode fiber - back stimulated brillouin scattering ( bsbs ) and the wavelength - selecting characteristics of fiber gratings, self - q - switched pulses are achieved from a linear cavity erbium - doped fiber laser pumping by a 980nm ld continue wave ( cw ) pumping, the pulse width is 2. 2ns and the repetition frequency of pulses is 64. 5mhz

    （ 2 ）利用單模光纖的非線性效應背向受激布里淵散射（ bsbs ）和光纖光柵的選頻特性，採用980nm半導體激光器連續泵浦方式，在線性腔摻鉺光纖激光器中實現了自調q運轉，獲得脈沖寬度（ fwhm ）約為2 . 2ns ，重復頻率為64 . 5mhz的穩定的光脈沖輸出。
  16. Secondly, typical approaches of studying on vegetation have included radiative transfer, four - stream, geometric optics, hybrids of two or more of these, and numerical simulation. then we introduced several models for density or sparse vegetation, soil and desert

    然後，簡單論述了建立植被散射模型的發展動態和幾種典型方法：輻射傳輸模型、四通量模型、幾何光學模型以及復合模型等，初步研究了用於稠密植被、稀疏植被、土壤、沙漠等環境背景的雙向反射函數模型。
  17. Gain character of amplified backward spontaneous raman scattering in the dcf fiber

    652光纖中背向自發拉曼散射的增益特性
  18. Theatre - goers receive sound from the front, reflected off the theatre ' s foreground, as well as from behind them, backscattered by the seats

    觀眾們把從前面傳來的聲音反射到劇院前方區域，同時從後面傳來的聲音通過座椅進行背向散射。
  19. With these backgrounds, the object being investigated in this article is composite metallic and dielectric structure which is composed by piecewise homogeneous, linear and isotropic medium, the problem being investigated is the complex scattering and radiation problem, the intention being investigated is modeling and fast computing the electromagnetic characteristic of electric large complex structures with uniform method, the final objective is developing general fast electromagnetic computing software to solve the realize electromagnetic computing problems in engineering

    本文就是圍繞這一背景展開的，研究對象是由分塊連續、線性、各向同性媒質組成的「金屬與介質混合結構」 ，研究問題是復雜的散射和輻射問題，研究目標是以統一的方法對電大尺寸復雜結構作電磁建模與快速計算，最終目的是開發通用的電磁計算程序，來解決一些工程中的復雜電磁計算問題。
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