方向射界 的英文怎麼說
中文拼音 [fāngxiàngshèjiè]
方向射界
英文
angle of traverse-
The method of crack - division is used to make radial cracks at the edge of cavity. a series of integral equations for determining the dsif at tips of anti - plane crack are set up in terms of the green ' s function
按「契合」的方式和採用裂紋切割技術構造出孔邊徑向界面裂紋對sh波散射的模型,利用green函數建立直接求解m型裂紋尖端動應力強度因子的定解積分方程組。Numeral results of dsif at radial crack tips of ellipse and square cavities are provided. then the influences of different shape cavities upon the dsif at the crack of their edges are discussed. 5. scattering of sh - wave by a radial interface crack at the edge of arbitrary - shape - cavity is studied
給出了橢圓孔和方孔孔邊徑向界面裂紋尖端動應力強度因子的數值結果,討論了在不同形狀孔、不同入射波數、不同入射角和不同材料常數組合情況下孔邊徑向界面裂紋尖端動應力強度因子變化的規律。In spite of their unitarian proclivities and their masks of conservative broadmindedness, they were two generations behind interpretative science : their mental processes were mediaeval, while their thinking on the ultimate data of existence and of the universe struck him as the same metaphysical method that was as young as the youngest race, as old as the cave - man, and older - the same that moved the first pleistocene ape - man to fear the dark ; that moved the first hasty hebrew savage to incarnate eve from adam s rib ; that moved descartes to build an idealistic system of the universe out of the projections of his own puny ego ; and that moved the famous british ecclesiastic to denounce evolution in satire so scathing as to win immediate applause and leave his name a notorious scrawl on the page of history
盡管他們傾向于唯一神教,戴了一副具有保守開明思想的面具,實際上他們已落後于解釋世界的科學兩代之久。他們的思想還處在中世紀階段。同時,他也感到,他們看待生命和宇宙的終極事實的方法還是形而上學的,那種看法阻地球上最年輕的種族的看法一樣幼稚也跟穴居人的看法一樣古老,甚至更古老那看法使第一個更新世的猿人害怕黑暗使第一個匆促的希伯來野蠻人用亞當的肋骨造成了夏娃使笛卡爾通過反射渺小的自我建立了唯心主義的宇宙體系使那有名的英格蘭傳教士用尖刻的諷刺來譴責進化論,並立即博得了喝彩,從而在歷史的篇章里草草留下了一個臭名。But just as in real life, it allows you to project nuclear force nearly anywhere on the map from a platform that the enemy has a real hard time tracking
但是就像真實世界中的那樣,核潛艇可以讓你從一個敵人很難找到的平臺上向幾乎地圖上的任何地方發射核彈。First, it was taken that a discuss about the effects of geometry parameters of each piezocrystal on direction parameters ( main lobe width, side lobe amplitude, elimination of grating lobes ), amplitude of ultrasonic pressure, element viberation pattern, mutual radiation among elements, efficient test regions, ability to keep accurate and near - field distance and so on. based on the direction of ultrasonic field in ulpa deduced by ourselves. in addition, on the base of integrating all kinds of factors, it was put forward that the principle and method for optimized design of geometry parameters of piezocrystals in ulpa transducer, and its design programme and interface were compiled
首先在推導超聲相控線陣換能器聲場的指向性的基礎上,就各個晶片幾何參數對指向性指標(主瓣寬度、旁瓣幅度、消除柵瓣) 、聲壓幅值、陣元振動模式、陣元間互輻射、有效檢測區域、精確控制能力、近場長度等方面的影響進行了論述,並在綜合各方面影響的基礎上,提出了晶片幾何參數優化設計的原則和方法,編寫了設計程序和界面。The stability output second harmonic generation ( shg ) experiment results of single - longitudinal mode and multi - longitudinal mode with long cavity were explained reasonably with these rate equations. the high polarization of fundamental wave in the isotropic laser media nd : yag with type - i critical phase - matching lbo was studied with the rate equations including polarization of fundamental light. using the polarization function of lbo, a quartz full - wave plate was introduced into the cavity, a kind of birefringent filter by considering the combination of the polarization function of the type - i critical phase - matching doubling frequency crystal lbo and the quartz whole - wave plate was constructed
將腔內多縱模倍頻速率方程推廣應用到準三能級藍光激光器中,分析了一個縱模、兩個縱模、多個縱模時的噪聲情況,合理地解釋了實驗中激光器單縱模運轉以及長腔多縱模運轉時穩定輸出的實驗現象,同時利用該速率方程分析了以各向同性激光晶體nd : yag為工作物質,類臨界相位匹配lbo為倍頻晶體的藍光激光器中基頻光偏振特性,合理利用類臨界相位匹配lbo倍頻晶體的偏振特性與引入的石英晶體全波片構成雙折射濾光片,通過選單頻來抑制噪聲,獲得了藍光低噪聲的穩定輸出。The results show that : 1 ) the effects of interface on waves scattering are stronger in the structure with the interface perpendicular to the direction of fracture normal than that in the structure with the interface parallel to the direction of fracture normal. 2 ) when the interface is perpendicular to the direction of fracture normal, the amplitude of reflected waves and converted s - waves are higher and there are the sub - p - and sub - s - wave. 3 ) when the elastic waves propagating in the multi - stripe model, wavesforms become complex due to multiple scattering on interfaces
研究結果表明: 1 )界面與裂縫排列方向平行時,界面對波的散射作用大於界面與裂縫排列方向垂直時的情況; 2 )當界面與裂縫排列方向平行時,在界面上產生的反射波及轉換的橫波幅度較大,並且有次級縱波和橫波產生; 3 )彈性波在多條紋結構中傳播時,在界面上產生多次散射使得波形十分復雜。A patch antenna with air holes in the substrate has been designed. the finite - difference time - domain ( fdtd ) method together with the perfectly matched layer ( pml ) boundary treatment has been used to study the performance of the antenna. it is shown that the surface waves are significiently suppressed, the frequency bandwidth is improved, the sidelobe levels are reduced and consequently the gain in the forward direction is improved by 14 db ( about 4 db higher than the value reported previously )
設計了一種基底鉆周期圓孔結構的電磁(光子)晶體貼片天線,用fdtd方法並結合pml吸收邊界條件對該天線進行了研究,結果表明本文所設計的基底鉆孔型電磁晶體貼片天線取得了多方面的性能改善,與普通天線相比,基底中的表面波受到很大抑制,天線的帶寬增加,遠場方向圖上天線的旁瓣和背瓣被明顯削弱,向前輻射的增益由原來的12db增加到26db ,增加了14db ,比文獻上報道的gonzalo等人的研究結果提高了4db 。The performance of the pbg antenna using the new pbg cover together with a pbg substrate is studied by the fdtd method together with the pml boundary treatment. the numerical results show that a more focused beam radiated in the broadside direction is achieved. the gain of the pbg patch antenna in the forward direction is improved by about 6 db. the radiation directivity is improved significantly and reaches 11. 5 db, which is 0. 4 db less than the maximum value that is allowed physically for this size of the antenna ( this difference is about 4. 1 db less than the difference achieved by thevenot et al.,
用fdtd方法並結合pml吸收邊界條件,我們對加了這種新的覆層結構並且基底鉆孔的復合結構電磁(光子)晶體貼片天線的性能進行了研究,結果證明加了這種新的電磁晶體覆層結構以後,天線的波束收攏很多,並且向前輻射的增益大大提高,與普通天線相比,天線的e面和h面方向圖上向前輻射的增益均提高了約6db ,另外,該復合結構天線的方向性系數達到了11 . 5浙江大學博士學位論文db ,與該物理尺寸天線的方向性系數的理論極限值( 11 . 9db )相差0 . 4db ,該差值比thevenot等人設計的電磁晶體覆層天線的相應差值減少了約4 . 1db ,比qiu等人設計的電磁晶體天線的相應差值減少了約1The simplifications offered by bpm reduce the computational complexity of most problems and speed up the computational process for many
而tbc邊界條件是假設在接近邊界處的場為一向外輻射的平面波,其幅值、方向等參數由試探法決定。There will therefore be very little diffraction parallel to the edges of the slit.
因此,在平行於狹縫兩端邊界的方向上,幾乎沒有什麼衍射。Many dislocations were emitted from the grainboundary in the front of crack and were driven out of grain boundary area, leaving dislocation free zone in the front of grainboundary. a concept of grainboundary dislocation free zone is proposed. the deformation in the front of crack tip in magnesium was single slip, which resulted in the thinning in the area of crack tip
首次發現裂尖前方晶界對裂尖發射的位錯有排斥作用,裂尖前方的晶界可以向晶界兩側晶粒發射位錯,位錯從晶界發出后迅速離開晶界向前運動,形成晶界無位錯區,首次提出晶界無位錯區的概念。Change in the direction of propagation of radiation determined by change in the velocity of propagation in passing through an optically nonhomogeneous medium, or in passing from one medium to another
當輻射通過光學異性的界面,或從一種媒質進入另一種媒質時,傳播速度的改變而導致的輻射傳播方向的改變。Introduction : rambo has returned, and this will give us his interpretation of the worlds most elite special forces of the brilliant performance of the operation guide : keyboard control, moving from top to bottom and around key fire direction control, a key to machine guns, and grenades to the space bar, remember that there are weapons and ammunition restrictions oh, it should not an exaggeration to see a supplementary packet remember not miss 1, 10
攻略:蘭博又回來了,這次他將給我們演繹全世界最精英的特種兵的精彩表現操作指南:鍵盤控制,上下左右鍵移動並控制射擊方向, a鍵為機槍,而空格鍵為手雷,記得武器都是有彈藥限制的哦,不要隨便亂用,看到了補充包就記得不要錯過咯Rambo has returned, and this will give us his interpretation of the worlds most elite special forces of the brilliant performance of the operation guide : keyboard control, moving from top to bottom and around key fire direction control, a key to machine guns, and grenades to the space bar, remember that there are weapons and ammunition restrictions oh, it should not an exaggeration to see a supplementary packet remember not miss 1, 10
蘭博又回來了,這次他將給我們演繹全世界最精英的特種兵的精彩表現操作指南:鍵盤控制,上下左右鍵移動並控制射擊方向, a鍵為機槍,而空格鍵為手雷,記得武器都是有彈藥限制的哦,不要隨便亂用,看到了補充包就記得不要錯過咯Our factory perseveres in the guideline of " finding a foothold in zhongnan, radiating the whole country, leading to the world ", pursues the tenet of " highest quality, reasonable price, best service ", conforms to the contract, and emphasize the credit. our factory provides high quality machines to nearly one thousand consumers in twenty - seven provinces 、 cities and mulicipalities and attains good reputation. our factory possesses more than 220 various process machines and is capable of doing all kinds of process because we have varieties of advanced process technics and self - contained modern estimate methods. our factory can provide a cement factory whose annual output is from ten thousand to three hundred thousand tons with mainframe, accessorial machine and fittings
我廠堅持"立足中南,輻射全國,走向世界"的方針,奉行"質量第一、價格合理、用戶至上"的宗旨,守合同、重信譽,為全國27個省市自治區近千家用戶提供了質量可靠的機械設備,深受用戶好評,我廠擁有各類加工設備220多臺,加工能力齊全,具有各種先進的加工工藝與完備的現代檢測手段,可為年產1 - - 30萬噸水泥廠提供主機、輔機和配件。But we should remember, do not accustomed to such real - world operations going oh games : mouse control direction click the left mouse button can at the floor below the pedestrian shooting
不過要記得,可別把這種習慣帶到真實世界里去哦游戲操作:鼠標控制方向,點擊鼠標左鍵可以對準樓下面的行人射擊。Due to the different values of incident angle, there are two different propagation formats. one case is that the beam is finally trapped in a guide - like channel and propagates stably along the channel when the launching angle is smaller than a critical value. otherwise, it will propagate along the incident direction all along
由於入射角度的取值不同,格子孤子具有兩種不同的傳輸方式:當光束入射角小於某臨界角度時,光束可被類似波導形式的路徑俘獲,轉而沿該路徑向前傳輸;當光束入射角大於該臨界角時,孤子則不會被俘獲,而是沿著光束的入射方向直線傳輸。This thesis contributed to the comprehensive study of the finite - difference time - domain ( fdtd ) method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies. the work includes mainly three parts : the study on the performance of pml absorbing boundary condition applied to pseudo low frequency electromagnetic problems ; the validation of the fdtd method with pml absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna, and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies ; the development of an improved alternating direction implicit finite - difference time - domain method
在綜合前人工作基礎上,本文對時域有限差分( fdtd )法及其在開關電源輻射電磁場數值計算中的應用進行了系統的分析和研究,其核心內容包括:偽低頻電磁場數值計算中pml吸收邊界條件性能的研究;基於基準問題?電偶極子天線三維輻射電磁場,驗證了本文構造的基於pml吸收邊界條件的三維fdtd法及其計算軟體,並應用於高頻開關電源輻射電磁場的數值分析;提出了一種改進的交替方向隱格式時域有限差分法。Firstly the paper introduces the former development history and the future development direction about ic, then discusses the technology speciality and the application direction for all kinds of ic. secondly, the paper discourse the design & development process of the system hardware and system software in detail, including design of hardware circuit, introduce of the hardware circuit chip, program of the hardware driver, program of the serial communication, design of the multi - process & multi - thread program, database system construction, interface of system software etc. after the finishing of the as - above part, the paper give the interface & result of the system running
本文首先簡單介紹了智能卡的發展歷史及未來發展方向,討論不同智能卡的技術特點和應用方向,重點對射頻技術和射頻卡進行介紹;然後詳細講述系統硬體和系統軟體設計及開發過程,對硬體電路功能構造、硬體電路採用的晶元、硬體驅動程序的編寫、串口通訊程序編寫、數據庫系統構造和多進程多線程設計的實現及應用界面介面等作了具體詳細的介紹;在介紹完系統硬體和軟體設計后,給出系統的操作界面和部分運行結果;最後對本項目進行總結和展望,給出項目還需要改進的地方。分享友人