phase focusing 中文意思是什麼
phase focusing
解釋
調相聚焦-
3. introduced the principle of phase - match and the optics characters of ktp 、 lbo and other nonliner crystrals, demonstrate the optimal focusing conditions. based on a detailed analysis, ktp and lbo are selected as shg and thg cystal, respectively
3 .簡單介紹相位匹配原理和非線性晶體的選擇介紹了一些紫外晶體的光學特性，並闡述了光束的最佳聚焦條件，經過分析和綜合評價，選擇了ktp和lbo分別作為倍頻晶體及和頻晶體。 -
Focusing on the tactical index of ew system - bearing accuracy, this article makes deep - through analysis, comparison and study of the theory basis for traditional direction finding method. a 16 - channel monopulse amplitude - comparison direction finding method and new phase - delay estimating method has been proposed to use, through computer ' s analog computation and relative measures in actual engineering practices, the bearing accuracy of traditional method has been increased and the service requirement of the ew weapon system and adaptability of equipment satisfied
本文圍繞著電子戰武器系統的戰術技術指標?測向精度，對傳統的測向方法的理論基礎進行了深入的分析、比較和研究，提出了採用16通道單脈沖比幅測向體制和新的相位延時估算方法，通過計算機的模擬摸擬計算，以及在實際的工程實現中採取的相關措施，解決了採用傳統的測向方法提高測向精度，滿足電子戰武器系統的戰術技術指標要求和裝備的適裝性。 -
There were many researches focusing on point - to - point congestion control based on tcp. studies of congestion control in multicast are still in experiment phase. hardly is there any congestion avoidance control used in most multicast applications
目前，對基於tcp協議點對點傳輸模式中的擁塞控制研究較多，而組播中的擁塞控制的研究還處于實驗研究階段，大多數基於組播的應用還沒有一種合適的擁塞控制機制或完全沒有採用擁塞控制。 -
This thesis also attempts to phase the restructuring endeavor into 4 stages, one in which the supply - demand balance should be adjusted through quality promotion, one when the competitive edge should be sharpened by realizing the comparative advantages though crop zone development, the agribusiness promotion stage focusing on the vertical integration of the production, processing and marketing and the coordinated rural - urban growth period characterized by the rise of the urbanization level, the free move of surplus labors, and the booming of the service industry in rural areas
並對農業結構調整的主要階段進行了劃分：即以提高農產品質量為重點，調整供求關系階段：以優化區域布局為重點，充分發揮比較優勢，提高農業競爭力階段；以發展農產品加工業，形成產加銷一體化為重點，促進農業產業升級階段；以農村城鎮化和農村第三產業快速發展為依託，加快轉移農村勞動力，促進城鄉經濟協調發展階段。 -
Abstract : the phenomenon of light and heavy steps in 5 - phase hybrid stepping motors is investigated. focusing on the relationships between phase - current and phase - voltage caused by different switching modes, a proposal to improve the light and heavy steps under3 - 4 phase mode is presented and the well - agreed experimental results are given
文摘:研究了五相混合式步進電動機4 5相通電運行時的輕重步現象，通過分析不同通電方式時導通與截止相的相電壓變化對相電流的影響，闡明了3 4相通電方式可以改善電機輕重步現象的機理，並進行了實驗驗證。 -
The reasons focusing only on ray travel times are " noise tolerance could be enhanced and the sensitivity to the environment model mismatch may be reduced by neglecting amplitude information ; phase ambiguity is eliminated by employing the group delay of arriving wave packets ; travel times are pseudo - linear functions of sound speed profiles of the medium, and the perturbation of ray travel time is much smaller than sound pressure ' s
之所以選擇聲傳播時間的原因是：噪聲容限可以得到提高，並且傳播時間的計算可以不考慮聲壓的信息，從而降低了對環境模型失配的敏感性；相位的起伏也可通過到達包絡的群延時來消除；傳播時間是介質聲速分佈的偽線性函數並且傳播時間的起伏遠小於聲壓的起伏。 -
Triggering time synchronization error model is derived, and based on phase noise model of frequency source, random synchronization error is considered. the effect of fixed and linear error on focusing quality is given by simulation
模擬試驗給出了固定、線性、正弦及隨機型觸發時間同步誤差對點目標成像指標的影響，同時給出了相應的面目標模擬結果。 -
This paper expounds the relation of side slope ' s stability with all explosion methods, discusses the development and basic principle of presplit blasting energy - focusing cutting, and introduces the course of development and research on precracking explosion by energy - focusing cutting and its application in dayaowan phase project
摘要綜述邊坡穩定性與各種爆破方法之間的關系，探討聚能切割預裂爆破的發展與基本原理，並對聚能切割預裂爆破的研製過程及其在大窯灣二期工程中的應用作簡單介紹。 -
Self - focusing and self - defocusing have their origin in the intensity dependence of the refractive index of the nonlinear medium. the picture becomes more complicated when two copropagating optical beams affect each other through nonlinear cross - phase modulation
當兩光束共同在非線性介質中傳輸時，兩光束由於交叉相位調制效應將會相互作用，其物理機制變的比較復雜。 -
We analyze the generation of external cavity frequency - doubling with knbo3 crystal theoretically. in order to get the second - order nonlinear conversion from 858nm to 429nm with knbo3, we use non - critical type - i phase - matching to avoid the walk - off effect the corresponding optimum focusing condition is as followings : double refraction parameter b = 0, focus parameter = 2. 84, optimum phase mismatch parameter = 0. 574. based on the theoretical analysis and numerical calculations, we obtain the ideal nonlinear conversion coefficient about 1. 45 % / w with crystal length of 7mm and 2. 07 % / w with crystal length of 10mm at the phase - matching temperature around 23. 50c
根據對其倍頻原理及性能的分析討論，在用該晶體完成波長從858nm到429nm的二階非線性轉換時，採用非臨界相位匹配條件（此時無離散效應，對應的雙折射參數b = 0 ，共焦長度為= 2 . 84 ，最佳相位失配因子為= 0 . 574 ） ，在相位匹配溫度約為23 . 5時，理論上通過計算得到理想情況下非線性轉換系數約為1 . 45 / w （長度為7mm ） ， 2 . 07 / w （長度為10mm ） 。 -
Allan variance estimated by simulated noise and calculated theoretically using power law model are well matched. the effect of phase noise on azimuth focusing is given by monte carlo experiment
模擬相噪得到的allan方差估計值與冪律模型得到的allan方差理論值符合得較好。 -
Then, focusing on the construction technology of twice pre - stressed continuous beam, the structure analysis methods in this phase is introduced
二次預應力連續梁由於其施工工藝的獨特性，必然會帶來結構分析上的一些差異。 -
The parallel computing ability of wave number domain algorithm is also being studied basically. the influence of the carrier movement errors on the sas image is analysed in chapter three firstly. based on studying those algorithms which have been successfully applied in sar, the limitations of these auto - focusing algorithms are discussed. hereafter an auto focusing algorithm based on time delay and phase error evaluation is raised, which can compensate big movement error effectively and so can be applied in sas
第三章首先分析了孔徑上運動誤差對合成孔徑聲吶圖像的影響，在研究在sar領域里成功應用的演算法的基礎上，對其運動補償的局限性做了分析，提出一種基於時延相位估計的自聚焦演算法，它能夠有效地補償運動誤差帶來的影響，並且適用於sas運動誤差較大的情況。 -
Recently focusing of optical beams and pulse beams by cross - phase modulation has been considered both theoretically and experimentally
近年通過交叉相位調制效應使光束和脈沖光束壓縮的研究較多。
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