空心束 的英文怎麼說
中文拼音 [kōngxīnshù]
空心束
英文
hollow beam-
On the toilet table the bouquets - roses, lilacs and hyacinths - appeared like a very ruin of flowers. their perfume was strong and penetrating, while through the dampish air of the place, which was full of the spoiled exhalations of the washstand, came occasional whiffs of a more pungent scent, the scent of some grains or dry patchouli ground to fine powder at the bottom of a cup
梳妝臺上放著許多花束，有玫瑰，丁香，風信子，花堆得像要坍塌下來，散發著一股濃郁的沁人心脾的芳香室內空氣潮濕，洗臉池中散發出的一股淡淡氣味中，不時飄出一陣刺鼻的香味，那是從一隻高腳杯底部的九根捏碎了的干廣藿香莖中發出來的。When a collimated - well gaussian laser beam passes through a 27i - phase plate and then focused by a lens, a focused hollow beam ( fhb ) will be generated behind the lens, as a result of the completely ( r = 0 ) and partially ( r 0 ) destructive interference effects around the central region of the beam
當一束準直的高斯光束通過具有2位相分佈的位相片和一個薄透鏡時，這將導致在入射高斯光束中心的完全和部分相消干涉效應，於是在透鏡后就會形成一束聚焦中空光束（ fhb ） 。The night landing, the 11th in the centre ' s 94 shuttle missions, ended a 10 - day mission to outfit the orbiting international space station
這次夜間降落，是中心的94宗太空梭任務中的第11次.結束了為期10天去裝備在軌道上的國際太空站的任務There is no sky in june so blue that it does not point forward to a bluer, no sunset so beautiful that it does not waken the vision of a greater beauty, a vision which passes before it is merely a bad joke, life a vulgar flare amid the cool radiance of the stars, and existence an empty laugh braying across the mysteries ; if these intimations of a something behind and beyond are not evil humor born of indigestion ; or whimsies sent by the devil to mock and madden us ; if, in a word, beauty means something, yet we must not seek to interpret the meaning
沒有任何一片六月的天空可以碧能夠藍得如此完美無法再藍，沒有任何一輪落日能夠如此美麗，得令人無法再激起更美的視覺感受，即使因為那視覺感覺立足未穩便是轉瞬即逝，只在飄過的葉子里留下無法言傳的渴望與遺憾；但是如果這個世界不只是一個惡作劇，如果生命不只是群星冷清的光輝中一束人間的火花，如果存在不只是在解釋神秘時發出的刺耳冷笑；如果對于在我們身後和另一邊的世界給我們的這些提示並非不是由於無法理解的邪惡本性而產生的失望心情；也並非不是惡魔派來愚弄和逼瘋我們的古怪念頭的話；總而言之，如果即使美麗有其意義，但我們也不允許決不要苛求試圖去解釋它。Abstract : new ideas, new structures and new technologies have been used for the design, manufacture and installment of wiggler in order to achieve the coincidence of the central level planes of magnets and beam vacuum tube
文摘:採用新思想、新結構、新工藝設計和加工超導扭擺磁鐵，並在安裝過程中確保磁體的準直，實現了磁體的磁中心水平面與束流真空管的中心水平面的重合。The laser power is detected through the pd ’ s movement across the faculous region. when the value of the peak value of laser power is got, the power of the facular boundary points can be found according to definition of the facular boundary such as “ 1 / e ~ 2 ” theory. then the equation of the facular boundary can be made fitting by using the least square method, and calculate the beam divergence at last
採用兩個光電探測器分別檢測光束不同高度上的兩個光斑，在確定光斑中心最大光強值后，根據光斑截面尺寸的1 / e2定義，得到光斑截面邊界點的光強值，並以其為標準判定光斑截面的邊界點，對探測到的邊界點通過最小二乘法進行擬合，得到橢圓光斑截面的方程，根據空間幾何關系求出發散角。In the experiment, we use the he - ne laser and the semiconductor laser as the source, record the bessel beam patterns behind the axicon by using a digital camera and a microscope, measure the radius of the bessel beam central spot by film - scanning and measure the effect of both the radius of the aperture and the open angle of the axicon on the maximum non - diffraction distance. the experiments show that a specific propagating range has constant power and the beam has a bessel - like distribution in this range. the results agree with the beam corresponding to a diffraction free beam
同時我們還採用膠片掃描的方法測量了無衍射光束的中心光斑尺寸，測量了不同光闌孔徑和不同稜角情況下的最大無衍射距離和傳播軸附近橫截面內微小光孔中的光強，實驗結果顯示當激光光束經過軸棱錐轉換後有一段距離功率變化很小，且分佈近似貝塞爾分佈，符合無衍射光束的特性;經過聚焦后，呈現三維分佈中空的光束bottlebeam ，實驗結果與理論分析基本吻合。This paper mainly discussed the optimization design of two - stage star - type gear transmission system. it covered the two sides : one - stage gear transmission and two - stage gear transmission. on the basis of their analysis and research, the mathematic models are created which include the objective functions of minimum volume and minimum center distance, the constraints of contact strength, bend strength and scuffing strength
本文主要研究了航空發動機星型齒輪傳動系統的優化設計，對單級齒輪傳動和兩級星型傳動都進行了深入的分析和探討，分別以系統體積最小和中心距最小為目標函數，以齒輪的接觸強度、彎曲強度、膠合強度等為約束條件，建立了完整的數學模型。" icao advised that the y2k contingency plans were deactivated with effect from 11 am ( hong kong time ) in asia pacific region west of the international date - line including hong kong and its air traffic control neighbours, middle east region and europe region, " according to a civil aviation department spokesman
民航處發言人說：根據國際民航組織的指示，以下地區的電腦公元二千年數位問題應急計劃已於香港時間上午十一時結束。這些地區包括有香港及其鄰近航空管制中心在內的國際子午線以西亞太區域、中東區域及歐洲區域。The main relative systems of heavy - hard rainfall in northeast plateau are western pacific subtropical high, south asia high, low latitude systems, upper level jet ( ulj ), low level greater wind speed axes, westerly trough and plateau trough, low level vortex, cold frontal, occluded front in qinghai lake, mesoscale low pressure, heat low - pressure in qinghai, shear line and convergence line, mesoscale cloud cluster, etc. the west subsidiary model of south asia high is the main circulation type of heavy - hard rainfall in this area
3 、西太平洋副高、南亞高壓、低緯系統、高空急流、低空大風速軸；西風槽和高原槽、低渦、冷鋒、青海湖錮囚鋒以及中尺度低壓、青海熱低壓、切變線與輻合線、中尺度雲團等系統是高原東北部地區大到暴雨的主要相關系統。 100hpa上的南亞高壓中心強度加強，位置東西擺動預示高原地區將有降水產生，中心強度減弱，降水過程結束。南亞高壓西部副型是高原東北部地區大到暴雨的主要流型。Vibration analysis and fem model of hollow circular beam with constrained damping layer
圓形空心截面約束層阻尼梁整體單元建模與振動分析Until now many methods have been proposed to generate the flat - top or bottle beam intensity distribution
迄今為止，已經實現了將激光光束整形成平頂光束或局域空心光束等。In the first section, according to economics principles, after analyzing the contradictive phenomenon in urbanization economic operation which brings profusion of different opinions, reveals and concludes two practical condition of disequilibrium and their representations : firstly, source restriction, as a result of " urban disease " and urban scarcity ; secondly, demand restriction, which is reflected by " hollowness ", suburbanization and rural economy
第1章，在眾說紛紜的城市化經濟運行的矛盾現象中，根據經濟學原理揭示和歸納了兩種現實的非均衡狀態及其各自內部的不同表現：一是由「城市病」與城市短缺所展現的城市化經濟運行的資源約束形態，另是由城市「空心化」 、郊區化與村鎮經濟所展現的城市化經濟運行的需求約束形態。You start at a solid circle and end at a target
從實心圓開始並以空心圓結束。The present thesis is devoted to studying the intensity distribution of the focused partially coherent beams, especially investigating the focal shift, the focal switch. the generation of partially coherent flat - top beams, partially coherent doughnut spots and partially coherent bottle beams has been investigated
值得一提的是，我們詳細討論了焦移、焦開關現象，以及部分相干平頂光束、部分相干麵包圈光束、部分相干局域空心光束的產生過程。Each of hollow beams has its own particular physics character, this causes widely applied in the trapping particles, four - dimension manipulating, guiding cold atomic, and atomic funnel and so on
摘要各類空心光束都有其新穎獨特的物理性質，這使得其在實現微觀粒子的光學囚禁與四維操控以及冷原子的激光導引、漏斗等方面有著非常廣泛的應用。In this paper, the character, the generation and the application of some familiar hollow beams are summarized briefly, then its recent progress in side and out will be introduced, finally some brief outlook about the future study and applications of the hollow beams will be made
文章簡要概述了常見的幾類空心光束的性質、產生方法及其應用，介紹了近幾年來國內外的一些最新研究進展情況，並就空心光束的未來研究和應用進行了展望。Theory of one kind of slow wave system applicable to hollow electron beam
一種適用於空心電子束的慢波系統的理論The main work of this dissertation focuses on the analysis and design theory for a resonator with diffraction optical elements by using a matrix eigenvalue method. the principle and method how to realize a low diffraction beam have been described. both the experimental and theoretical results show that the low diffraction beam has great advantages over the gaussian beam in an ablation - dominated material removal processes
本文的重點是：闡述了利用矩陣本徵值方法分析和設計激光諧振腔的系統理論；簡述了產生和實現低衍射光束的原理和方法，實驗發現了低衍射光束比高斯光束所具有的獨特性能；理論設計和研製了衍射光學元件，並通過實驗獲得空心激光光束，提出了對不同空心光束的描述方法。The hollow optical beams have been analyzed theoretically, and have been realized experimentally by placing a diffraction optical element in the cavity
在理論上對空心光束進行了分析，並研製了能產生空心光束的衍射光學元件，將其插入激光諧振腔內，實現了空心激光光束。分享友人