束窄 的英文怎麼說
中文拼音 [shùzhǎi]
束窄
英文
constriction-
Under astigmatism even narrow parallel light beams will not combine into one point.
有象散存在時甚至很窄的平行光束都不能會聚在一點。This article discussed ar modeling method, capon method, music method and mn method four kinds of high resolution algorithms principle and has separately made the computer simulation in the ideal situation to the above four algorithms. through the comparison, the beam width of high resolution algorithm is much narrower than conventional beamforming method. then unifies the actual utilization, discussed the influence of time delay unbalance, time domain sampling, plane wave supposition and array element with scope and phase not identically to the beamforming and made the computer simulation
本文首先討論了ar模型法、 capon法、 music法和mn法四種高解析度演算法的原理，在理想的情況下分別對上述四種演算法作了計算機模擬，通過比較，高解析度演算法的束寬比常規波束形成法窄得多;然後結合實際運用時的情況，重點探討了延時失配、時域抽樣、平面波假設和基陣的幅相不一致對波束形成的影響並做了計算機模擬。The theoretical expression of the critical angle is acquired, showing that it rises with the increase of the depth and period of modulation of refractive index. also, it increases as the beam width decreases
從理論上得到了該臨界角的表達式，它隨折射率調制周期、調制深度的增加而增大，且光束越窄臨界值越大。He then shines a narrow beam in horizontally through the pinhole.
然後他通過小孔水平地射入一窄光束。To improve guidance accuracy the systems engineer will want the narrowest guidance beam possible.
為了提高制導精度，系統設計人員希望使用盡可能窄的制導波束。Remove objects such as watches, wristbands, rings, tight clothing, belts, boots or shoes as the wound may become swollen
由於受傷部位或會腫脹，應即除去束縛性物件，如手錶手鐲指環緊窄的衣物如腰帶靴或鞋等。Parabolic antenna in a widely used is tracking antenna area, by use the optimum design, it may produce a very narrow beam, it ' s tracking precision is high, but because it ' s beam width is very narrow, the searching target is very difficult
摘要拋物面天線是火控雷達中普遍使用的一種跟蹤天線，通過系統優化設計，可以形成很窄的波束，所以其跟蹤精度很高，因為其波束很窄，所以搜索發現目標困難。Abstract : we have studied theoretically a beat effect in a four - level system due to fifth - order optical polarization, and considered the cases that the pump beams have either narrowband or broadband linewidth. we have found that the accuracy for the energy - level splitting measurement is determined by the homogeneous linewidths of the optical transitions. that is to say, this technique can achieve doppler - free precision in the measurement of the energy level splitting between two excited states which are dipolar forbidden from the ground state
文摘:研究了四能級系統中基於五階極化的拍頻效應，考慮了抽運光束為窄帶線寬或寬帶線寬的情形.發現其對能級分裂的測量精度決定於光學躍遷的均勻增寬.也就是說，這種技術在測量與基態是偶極禁戒躍遷的兩激發態之間的能級分裂時，可得到消除多普勒增寬的精度This part ' s focus lies in analyzing materialy such bequeathal problems at present as obscurity of objects, singularity of supervisor, invalidation of operation, lag of measures, shortage of competence, differ of standard, flabbiness of restrictation ， separation of system and stricture of visions, ect, and expounding the reasons of those problems based on the facts which have never been resolved
文章把重點放在當前我國金融監管適應性既存的遺留問題之上，分別從監管目標模糊、監管主體單一、監管行為失效、監管手段落後、人員素質偏低、監管標準不一、監管約束乏力、監管體系分割以及監管視野狹窄等方面進行了具體的剖析，並結合實際綜合闡述了這些問題尚未得到解決的深刻原因。Destructive tests on welds in metallic materials - hardness testing of narrow joints welded by laser and electron beam vickers and knoop hardness tests
金屬材料焊縫的破壞性試驗.激光和電子束焊測定窄接頭硬度的試驗By comprehensive analysis of the control effects on saltwater intrusion and their impacts on flood control and drainage as well as influence on the south branch of the yangtze river estuary, the mediate narrowing scheme was recommended
結果表明，綜合咸潮倒灌的控制效果、防洪排澇影響及對南支的影響等，中束窄方案為本研究的推薦方案。Smart antenna has been widely researched in communication and signal processing, the adaptive beamforming algorithm is the key technique of smart antenna. it could adaptively steer the array directional pattern to form the main narrow beams with high gain in the direction of the users " signals while deeply nulling the interference signals. it is an effective way to realize the optimal receiving of the interesting signals
智能天線技術是目前通信和信號處理等領域的研究熱點，自適應波束形成演算法的研究是智能天線的一個關鍵技術，它能夠自適應地控制天線陣方向圖在用戶信號方向產生高增益窄波束，在干擾信號方向產生較深的零陷，是實現用戶信號最佳接收的有效方法。Narrow beam injection laser
窄束注入式激光器1n thi s paper we bring forward a new p1an for array miniaturization using the p1ane phase - - contro11ed array can achieve both large covering width and narrow beamwidth
本論文提出一種小型化的方案，採用平面相控陣可以實現大的覆蓋寬度和窄波束。This paper mainly discusses the vital part discrimination of the near - field target by using target acoustic imaging method, which uses dense narrow beams based on high frequency system
本論文主要研究了基於高頻體制下利用密集窄波束形成目標圖像，進行近場目標精確識別。If we tracked satellite by the tradition narrow beam antenna, that should caused the jumping tracking between multi - aircraft. that is difficult to achieve by the immense antenna boot and the follow - up system. using digital beam forming realize aircraft target tracking and controlling should be best means to resolve this problem
隨著我國多星測控系統的發展，在一個測控站作用范圍內將出現多星，同時要求地面站對多星同時進行跟蹤測控；如果採用傳統的窄波束天線對目標進行跟蹤測控，必然導致天線在多個飛行器之間進行跳動跟蹤，這對于龐大的天線引導、伺服系統來說難以實現，採用數字波束對飛行器目標進行跟蹤測控是解決此問題的最好方法。This paper regards narrow fan - beam scan mode as multi - detector parallel beam scan mode
本論文將窄角扇束掃描看成是多探頭的平行束掃描。In this paper, the author discusses in detail an efficient iterative image reconstruction algorithm in industrial computerized tomography ( ict ) with the narrow fan - beam projection
本文對工業ct窄角扇束掃描方式下的迭代圖像重建演算法進行了研究。Its image reconstruction belongs to the image reconstruction under narrow fan - beam scan mode. after comparing different algorithms, this paper introduces convolution back projection algorithm for the parallel image reconstruction
採用高能直線加速器作為射線源的高能x射線工業ct機多採用窄角扇束掃描方式，其圖像重建屬窄角扇束掃描方式下的圖像重建。Influence of the tunnel cros sing the yellow river in south water to north project on flow and sediment movement
穿黃隧洞束窄河道對河段水沙特性的影響分析分享友人