自由發射 的英文怎麼說
中文拼音 [zìyóufāshè]
自由發射
英文
free-free emission-
Since the discovery of cnt ’ s and find that cnts have small diameter and high length diameter ratio and can be look as one - demission material, it can be used as emission emitter of fed. especially, the aligned cnts array can be seen innumerable single cathodes which are lined regularly and form array. so growing aligned cnts array in selective area is the key technology to product cnts fed, which is also the necessary condition of cnts micro - electronics device
自碳納米管發現以來，由於碳納米管的直徑很小、長徑比大，故可視為準一維納米材料，可作為場發射平板顯示的尖端發射體，特別是定向碳納米管陣列可看成是無數根單尖陰極規則的排列起來形成陣列式，是理想的場發射平板顯示器的尖端發射體。The density of holes in the base is less than the density of free electrons in the emitter and collector.
基極中空穴的密度小於發射極和集電極中自由電子的密度。In the absence of an appreciable magnetic field, the ensemble of nebular electrons interacts with ions to emit weak continuous radiation by free-free and free-bound transitions.
在不存在可觀的磁場時，星雲中的電子系綜與離子相互作用可通過自由-自由和自由-束縛躍遷而發射弱連續輻射。Derived from the 1929 fortress gun ( itself a development of the old 1897 field gun ) with a semi - automatic breech and an automatic loader added, the " high power " apx 75mm gun fired a mle 1915 he round with a reduced charge at 400 m / s and the mle 1915 ap round at 570 m / s ( 50mm penetration at 1000 m ) and its two sights and stereoscopic rangefinder allowed a direct fire range of 2000 m
「大威力」 apx型75毫米炮由1929型要塞炮（舊式1897型野炮的發展型）衍生而來，加裝了半自動炮尾和一個自動裝填器，發射減裝藥的1915型高爆彈（初速400米/秒） ，及1915型穿甲彈（初速570米/秒， 1000米距離可穿透50毫米裝甲） 。Aberration of electronic lens made by electron gun and aberration of magnetic deflection system made by dy are comprehensively investigated, so is the shadow mask ' s effect on electron beam landing screen error. the conclusion can be get that, because the distribution of electron beam landing screen ( distribution of luminance ) is affected by many kinds of factors, it cannot get the correct function by calculation, and should be get by measurement instead
全面分析了cpt電子槍發射系統形成的電子透鏡像差與磁偏轉系統形成的偏轉像差；分析了蔭罩的自身厚度與位移對電子束著屏的影響，並由此得出結論，著屏電子束分佈（即亮度分佈）受著許多因素的影響，理論分析是半定量的，著屏電子束分佈需要用精確的測量儀器來測量。The shadow mask is the critical component of the colour picture tube and the important component for the choice of colour, its function concentrates on the limitation of electronics bound diameter and the screening direction, the electronics bound which is sent by the electronics gun goes scanning, during the scanning process, we should guarantee every bound gathering into the small holes situated on the screen, then these bounds will point to the regularized position through the small holes on the flat mask, and then three basic colours will be produced, at the same time, those useless electronics will be blocked by the mask board
平板蔭罩是彩色顯像管的關鍵部件之一，是一個重要選色元件，其作用是限制電子束直徑和上屏方向，由電子槍發射的電子束在偏轉磁場的作用下進行掃描，掃描過程中必須使每個電子束只能射中熒光屏上的為該束指定的那些小孔上會聚，並通過蔭罩上諸多的小孔分別打到各自對應的熒光質點上，發出三種基色（紅，綠，藍） ，而無用的電子則被蔭罩板截獲。This specific view becomes the tip of our designing ; the energy consumption has great relation with the rf module, which is breakpoint of the ebra ( energy - based radius self - adjust wireless sensor network protocol ). based on the facts between the energy consuming and the rf transferring radius, the ebra protocol is designed and implemented under the visual c + + 6. 0 ide, which switches its running mode with the energy consuming of nodes, so that meet the goal of energy saving of the nodes in wsn
本文正是從這一視角入手，根據結點能量消耗與無線傳輸發射半徑間的關系，設計並實現了一種基於能量的半徑自適應傳感器網路路由協議，使得節點能夠根據自身剩餘能量的狀況對節點的運行模式進行控制，同時對無線模塊的收發半徑進行動態調整，達到節能目的。At first, environment detection data is collected, modulated and emitted in the the system of fy - 2 and detectors. then data signal is magnified, demodulated and sent in the earth - based system of data receiving and demodulating. at last, data is received, processed, stored, displayed and judged to make alarm automatically by telephone for solar proton - events and x - ray flare in the system of data processing and alerting
首先在fy - 2衛星及探測器系統中，環境探測數據被收集、調制並發射，接著由地基數據接收及解調系統將數據信號放大、解調還原並發送，最後由數據處理及警報系統將數據接收處理、保存顯示並對太陽質子事件、 x耀斑進行自動電話報警。Abstract : we have studied the spontaneous emission from a three - level atom with an external - driving field in a photonic crystal. as a result of quantum interference and photon localization, the population in the two upper levels displays quasi - oscillatory oroscillatory behavior. this depends on the initial atomic state and the relative positions of the two upper levels from the forbidden gap. the intensity and the phase of the external field can affect spontaneous emission from the atom. the properties are different from a three - level atom either in vacuum or in aphotonic crystal without an external driving field
文摘:討論了在雙光子驅動場作用下，三能級原子在光子晶體中的自發發射問題.由於量子干涉和光的局域化作用，兩個上能級中的占據數將具有周期振蕩或準周期振蕩的性質，這不僅依賴于兩個上能級與禁帶的相對位置，同時也依賴于原子的初始狀態，而且還與驅動場的強度、驅動場的入射位相有關.這些性質既與真空中帶有驅動場的原子的自發發射性質不同，也有別于無驅動場作用下光子晶體中三能級原子的自發發射性質Industrial x - ray detector is specialized for household appliances manufacturer, which is composed of x - ray source, digital x - image receiver, automatic detection table, pick - up head & positioning system and lighting system
工業x射線檢測儀針對元器件製造商專業定製。由x射線發生源、數字x圖像接收器、自動檢測工作臺、攝像頭定位系統及照明系統組成。This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。Wind shear near the surface, for design purpose, is a shear which acts on a space vehicle free-standing on the pad or at the time of lift-off.
從設計目的看，靠近地面的風切變是作用於自由豎立發射臺上的飛行器或者發射時的飛行器上的風切變。Pulses of radiation are emitted when free electrons in the gas are accelerated by passing ions.
當氣體中的自由電子被掠過的離子加速時，將發出輻射脈沖。The system accomplishes ultrasonic pulse transmitting and receiving, signal amplitude adaptive adjusting, data acquiring, echo searching, data processing and analyzing. different algorithms for echo searching, filtering and time difference measuring are proposed based on the thorough analysis of ultrasonic echo signal
研製的超聲波液壓測量系統由超聲波探頭、超聲波收發系統、高速數據採集系統和計算機構成，實現了超聲波信號的發射、接收、自動增益控制、數據採集、自動搜索回波、數據處理、分析等功能。Since 1994, professor kwok has been serving as the principal investigator for canada s submillimeter - wave satellite odin which was successfully launched in 2001 on a russian start - 1 rocket and was the first satellite in the world to have carried out a spectra scan in the submillimeter - wave region
自一九九四年起，郭教授擔任加拿大次毫米波人造衛星odin的主持人。這枚由俄國start - 1火箭運載的人造衛星，在二一年成功發射，並且是首枚進行次毫米波段光譜掃瞄的衛星。In those discussions, we will share with the chinese the same briefing on our missile defense testing program that we have shared with our asian and european allies and friends and with the russians. our consultations with china will make clear that the u. s. missile defense program does not threaten china but seeks to counter limited missile threats from rogue states and the danger of accidental or unauthorized launches
我們在與中國的磋商中將闡明美國的導彈防禦計劃不會對中國形成威脅。美國的導彈防禦計劃是為了尋求反擊來自無賴國家的有限的導彈威脅以及意外或未經受權的導彈發射的危險。只有那些對美國懷有敵意的外國方面才有理由對美國的導彈防禦感到恐懼。We use the laser output ( 320 nm, 200 fs ) of optical parametric amplifier ( opa ) in < wp = 5 > an active passive mode - locked femtosecond ti - sapphire laser operating at a repetition rate of 1khz as a exciting resource to develop optically pumped stimulated emission of zno thin films. when rectangular stripe laser irradiates thin films, optical resonant cavity is naturally formed between two nanocrystallites along with the rectangular laser stripe and planar weveguide confines the light scattering
利用飛秒激光器作為光泵浦激發光源，研究了氧化鋅薄膜的光泵浦受激發射，當條形光斑輻照薄膜樣品時，將沿著光斑條由氧化鋅納米晶面自然地形成光學諧振腔，由於平面介質波導結構限制光散射，所以成功地觀測到二氧化硅襯底上的納米氧化鋅（ zno ）薄膜的紫外受激發射。The second, the launching dynamics calculation of projectile is arranged by using the theory of uniform design, and the concept of the integrating quantity for initial disturbance and the concept of the independence factor ' s effecting degree to dependence factor is inducted too. from the model of stepwise regression, the main random factors and their effecting degrees to initial disturbance can be obtained also
第二，用均勻設計理論安排彈丸發射動力學計算，通過引入起始擾動綜合量的概念和自變量對因變量的影響程度的概念，由逐步回歸模型分析了影響彈丸起始擾動的主要因素及其對起始擾動的影響程度，並推導了由自變量的標準差計算因變量標準差的公式。The research on data processing method of multi - spectral thermometry for the measurement of the true temperature and spectral emissivity of high temperature and ultrahigh temperature targets has been supported by the national natural science foundation of china ( no. 60377037 )
多光譜測溫數據處理方法研究是由國家自然科學基金（編號: 60377037 ）資助，應用亮溫逼近法和連續測量法解決高溫及超高溫目標真實溫度及物體的光譜發射率測量問題。The ivorian dispatched a fine 79th minute free - kick beyond shay given and just like against everton at the weekend, his individual brilliance ensured another win for jose mourinho ' s side
第79分鐘這個象牙海岸人的漂亮的自由球射門繞過了吉文打進球網，就如同周末對埃扶頓的比賽一樣，他個人的出色發揮為穆里尼奧的球隊取得了又一個勝利。分享友人