輻射背景 的英文怎麼說

中文拼音 [fúshèbēijǐng]
輻射背景 英文
radiation background
  • 輻 : 名詞（車輪中車轂和輪圈的連接物） spoke
  • 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 : 背動詞1. （用脊背馱） carry on the back 2. （擔負） bear; shoulder
  • 景 : Ⅰ名詞1 （風景; 景物） view; scenery; scene 2 （情形; 情況） situation; condition 3 （戲劇、電影的...
  • 輻射 : radiation; exposure; radio; beaming
  • 背景 : （布景; 襯托主體事物的景物; 對人物、事件起作用的歷史條件或現實環境） background; backdrop; setting
  1. They had found the cool afterglow of the big bang : the cosmic microwave background radiation

    他們發現的是大霹靂冷卻后的餘暉：宇宙微波背景輻射。
  2. Extragalactic background radiation

    河外背景輻射
  3. The concept of irradiance signal - to - noise ratio ( snr ) on the target plane and the minimum of the irradiance that can be detected by the detector was taken as the beginning, combined with a thorough analysis of the spectrum radiating feature of the target and the sky background, the atmosphere conditions, spectral filtering and the influence that the various components in the system have on the target irradiance on the detector ' s target plane and the background irradiance snr, the equation of the flying bomb ' s effect range affected by the point of burst measuring system is made, and all related factors that have an impact on the effect range are analyzed as well

    從探測器靶面上輻照度信噪比的概念、探測器的可探測輻照度最小值出發，在詳細分析目標、天空背景的光譜輻射特性、大氣條件、光譜濾波技術以及系統各環節對探測器靶面上目標與背景輻照度信噪比的影響的基礎上，推導了炸點測量系統對爆炸的飛行彈體的作用距離方程，分析了影響作用距離的諸因素。
  4. The electronic temperature, intensities of all lines and continuous spectra gradually increased with the increment of laser energy, and they got to maximum at different laser energy. our results of copper and aluminum show that there are possibly different thresholds of laser energy to electronic temperature and intensities of emission spectra of laser ablated plasma. at the different environmental gas pressure, spatial emission intensity distribution is explained by the competition among " heat reservoir effect ", " confined effect " and " s hadow effect "

    認為cu等離子體羽的發光機制是由電子與粒子的碰撞傳能、電子與離子的復合形成的；隨激光能量的增加， cu等離子體特徵輻射（分立譜） 、連續背景輻射（連續譜） 、電子溫度都出現最大值；結合對al的實驗結果說明：激光燒蝕金屬產生的等離子體，其特徵輻射、連續輻射、電子溫度可能都存在一定的能量閾值；背景氣壓對激光燒蝕等離子體譜線的影響，其機理可以認為是「熱庫效應」 、 「約束效應」及「陰影效應」相互競爭的綜合結果。
  5. The main research advances can be summarized as follows : ( 1 ) study the signal processing ' s performances and methods of homing torpedo system comprehensively, in order to setting up a corresponding mathematical models ; ( 2 ) analyze the ocean channel ' s effects on the work of homing system, then found some models such as target echo signal, noise ( including background noise, target radiating noise, etc ), ocean reverberation. according to them, simulate the array signal ; ( 3 ) the system structure, every function blocks composing are studied and founded thoroughly. then, discuss methods of signal processing in time domain and airspace domain ; ( 4 ) program the simulation software of torpedo ' s homing system according to the simulation models and flow charts, which connected with torpedo ' s control part

    本文所作的主要工作及研究成果主要有以下幾個方面： （ 1 ）對自導工作過程中的信號與信息處理的基本理論與方法進行了較為全面的研究，為建立一個較為完備的自導模擬系統提供了理論基礎； （ 2 ）討論了自導系統工作過程中海洋通道對目標回波信號與目標輻射噪聲信號等的影響，建立回波信號的數學模型、環境場中的噪聲信號模型（包括海洋環境噪聲、目標輻射噪聲與魚雷背景噪聲等）與海洋混響模型，模擬產生了聲自導系統基陣接收到的回波信號與噪聲信號； （ 3 ）深入研究並建立了自導模擬系統的總體框架，給出各個具體功能模塊組成，討論了聲自導系統對信號的時域與空域處理，並結合模擬程序中陣列信號處理模塊，給出固定多通道波束形成的模擬實現過程； （ 4 ）根據系統的模擬模型與已建立的模擬流程圖編制了通用魚雷模擬器自導系統模擬軟體，通過網路與控制系統相連，組成完整的魚雷模擬器。
  6. But wmap, with its ability to resolves slight temperature fluctuations down to millionths of a degree, is still able to detect these minute differences and produces the finest full sky thermogram of the cosmic background

    但由於wmap的超高靈敏度儀器可測量低至數百萬分之一度的溫差，它才能不負所託，得出至今最精細的全天微波背景輻射溫度圖。
  7. Based on our country ’ s active defense strategy, this paper is designed to carry out a thorough and effective study on anti - arm technologies. detailed contents are shown as follows

    本文就是在我國積極防禦的戰略指導思想的背景下，從保存自己的角度出發，針對抗擊反輻射導彈技術進行的深入研究，本文主要內容分為以下兩大部分。
  8. Topics include : planets, planet formation ; stars, the sun, " normal " stars, star formation ; stellar evolution, supernovae, compact objects ( white dwarfs, neutron stars, and black holes ), plusars, binary x - ray sources ; star clusters, globular and open clusters ; interstellar medium, gas, dust, magnetic fields, cosmic rays ; distance ladder ; galaxies, normal and active galaxies, jets ; gravitational lensing ; large scaling structure ; newtonian cosmology, dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis

    課程的主題包含了：行星、行星形成；恆星、太陽、正常的恆星、恆星形成；恆星演化、超新星、緻密天體（白矮星、中子星及黑洞） 、波霎、雙x -射線源；星團、球狀及疏散星團；星際介質、氣體、塵埃、磁場、宇宙射線；距離階梯；星系、正常及活躍星系、噴流；重力透鏡；大尺度結構；牛頓宇宙學、宇宙的動力膨脹及溫度發展歷史；宇宙背景微波輻射；大霹靂核合成。
  9. Firstly it discusses the value, meaning, background and method of this topic. then it deducts the single - bubble sound pressure, spectrum of sound pressure, power spectrum. according to the real situation of traveling bubble cavitation noise around a schiebe body, the mathematical model of single - bubble collapse is selected, furthermore, the mathematical model of mass traveling bubbles without interference effect is established, and the multi - peaks and rebound phenomenon while bubbles collapse is also analyzed with statistical method

    首先論證了本項研究的意義，價值，背景和方法，然後推出了單空泡輻射噪聲聲壓，聲壓譜和功率譜，針對回轉體流動泡空化噪聲的具體情況，選擇了雙指數模型作為單空泡潰滅的數學模型，進一步建立了無干涉條件下的群泡輻射噪聲的數學模型，並用統計的方法分析了空泡潰滅時的多峰值和反彈現象。
  10. This article, through analysis different system radar ’ s superiority and limitation in target identification, proposes to unite the convention air defense radar ’ s echo characteristic and the electronic support sensory system ’ s aircraft - borne radiant characteristic, structure reasonable recognition system. it can satisfie the airplane target identification demand under the different background

    本文通過分析不同體制雷達在目標識別上的優勢和局限性，提出把常規防空雷達回波特徵和電子支援偵察系統得到的機載輻射源特徵聯合起來，構造合理的識別系統的新思路，以此來滿足不同背景下對飛機目標識別的需求。
  11. To show the applicability of the proposed algorithm for engineering problems, the thesis computed the radiated electromagnetic field of a switched mode power supply, with special attention on the analysis of the emi in the electronic control circuit. different numerical results and two valuable guidelines are drawn

    從而以實際高頻開關電源為工程背景，通過對高頻開關電源產生的輻射電磁場的分析，重點計算了該開關電源控制迴路處的主要電磁干擾，得出了相應的數值計算結果和可供實用參照的結論。
  12. The use of interferometer to detect and analyze laser radiation is well known, but when the intense ratio of the laser radiation to the background natural light radiation is too small, the laser radiation cannot be detected. a novel more sensitive method for detect of wideband weak incident laser in strong background noise is introduced in this paper. the optical unit uses two wedge interferometers and two line array detectors. the incoming light radiation is divided into two beams and through the interferometers

    在被動激光偵察告警中，對微弱脈沖激光信號的探測是一個難點。當探測距離相當遠或視場內接收的背景光輻射很強時，脈沖激光信號到達探測器的能量很小，會淹沒在強大的背景光信號中而探測不到。本論文提出了一種探測微弱脈沖激光信號的方法，可對強烈背景光中的激光威脅信號進行探測和告警，並給出其波長參數。
  13. This dissertation bases on the research of battlefield armored reconnaissance tank system, which is a very important reconnaissance & information reception means for our country ? digital armored troops. the zzco2 radar armored reconnaissance tank system is the collector of radio information by use of the radiation and reflection of electromagnetic wave, at the same time it is a system which saves, processes and transmits the radar information picked up. the content of this dissertation involves the design and development of zzco2 ? software system

    本論文以我軍裝甲機械化部隊坦克師的戰場裝甲偵察系統的研製為背景撰寫。該系統是我國數字化裝甲部隊的重要偵察和信息獲取工具。其中zzc02型雷達偵察車（型）是該系統的前沿偵察車，是不可見電磁頻段的雷達信息的收集者，是以電磁波輻射、反射作為信息獲取的主要手段，以計算機主機為中心的信息採集、處理、存儲和傳輸系統。
  14. In the first part, the paper mainly discourse upon the gestation course of theoretic base in laser physics, stimulated emission, population inversion and other basic theory of laser were discussed

    第一部分主要論述了激光物理理論背景的醞釀過程，對受激輻射、負吸收、粒子數反轉這幾個激光物理的基本理論的建立過程作了研究和分析。
  15. Background radiation intensity

    背景輻射強度
  16. Tegmark is an expert in analyzing the cosmic microwave background and galaxy clustering

    鐵馬克是分析宇宙微波背景輻射與星系團的專家。
  17. It introduces the method of modulated light subtracting infrared radiation of atmosphere and background as well as the method of phase - lock - loop detecting feebleness signal

    採用光路差分調制的方法實時扣除背景紅外輻射，並採用鎖定放大器進行微弱信號的檢測。
  18. The thesis is based on the subproject of national " 973 " key project, " hxmt spacecraft integral analysis and design ". aiming at the satellite power system, it establishes a simulation software, and uses it on the hxmt power system designing and simulation

    本文以國家973專項課題「天體高能輻射的空間觀測與研究」的子課題「 hxmt衛星系統方案設計」為應用背景，構造了一個面向衛星電源系統的模擬軟體，並對hxmt天文衛星電源系統進行了設計分析和模擬工作。
  19. Secondly, other parameters such as temperature difference and emissivity of target and sky, molecular absorptive transmittance, instantaneous field of view ( ifov ), contrast threshold and radiant wavelength are discussed in detail

    然後，對目標天空背景溫差、發射率，氣溶膠衰減系數，瞬時視場、對比度探測閾值以及輻射波長等參數作了詳細討論。
  20. Our research group is involved in several areas of theoretical and phenomenological cosmology : the earliest instants of time, when the universe formed, the cosmic microwave background, the cosmic dark ages, structure formation, dark matter and dark energy as well as the development and adaptation of mathematics, statistics and computation to advance the state of cosmology

    我們的研究團隊的研究范圍包括了理論宇宙學和唯象宇宙學的好幾個領域：原初宇宙狀態、宇宙微波輻射背景、黑暗時期、物質結構的形成、暗物質和暗能量和對數學、統計和計算在宇宙學中的發展和應用。
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