輻射階地 的英文怎麼說
中文拼音 [fúshèjiēde]
輻射階地
英文
diverged terrace-
The ship radiated noise is analyzed and its 4 features are extracted from the envelop spectrum. the envelope of ship noise waveform can be demodulated utilizing hilbert transform, and the spectrum components with line rotation frequency of propeller shaft are extracted effectively by bispectrum, 1 ( 1 / 2 ) spectrum and 2 ( 1 / 2 ) spectrum analysis
對于通過希爾伯特變換解出的艦船輻射噪聲包絡信號進行高階統計量分析，有效地提取出了艦船噪聲的雙譜、 11 / 2維譜、 21 / 2維譜等方面的特徵。In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples
第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。They may originate from disks or outflows and may be to submit to graduate school, acadcmia sinica pumped by far - infrared radiation. hot ammonia molecular cores in the latest stage of evolution are intimately associated with
氨分子熱輻射的觀測顯示在演化最後階段，熱分子核緊密地與超緻密hii區聯系在一起並且在進行外流運動。Dalian must develop itself, and in the same time, it bring along the area development together. however, we must recognize what the problem we have and must face, such as mainstay industrial is not obvious, high science and technology develop slowly, the strength of urban is not powerful, level of infrastructure compares with the level of economic development is not suit, and so on. it is backward in idea, it is short of service consciousness
盡管這幾年大連的經濟發展取得了很大的成就，在區域中發揮著越來越重要的作用，但是，大連還處于現代化的初級階段，在城市功能擴展中還存在很多問題：就城市自身而言，總體經濟實力制約了輻射能級；粗放的產業結構使城市功能擴展后繼乏力；城市建設有了很大提高，但與城市功能擴展要求的差距還很大；腹地經濟的不發達影響城市功能擴展的進程。This paper makes a professional research on the spatial organization of harbin metropolitan area. through extensive field survey information, define the geographical scope of harbin metropolitan is harbin as area center, an area of about 35, 000 square kilometres in size, with a radius of 100 kilometres around the region of radiation, including at the harbin city and the surrounding wuchang, shuangcheng, acheng, shangzhi, binxian and zhaodong. social - economic development, urbanization and rural development zone building contributed to the development of common harbin metropolitan area formation ; with the reform and opening - up program and the continuous deepening of global economic integration, harbin metropolitan area will face in the future development of more opportunities and challenges
本文對哈爾濱都市圈空間組織進行實證研究，通過對大量的實地調查資料，界定了哈爾濱都市圈的地域范圍是以哈爾濱為中心，幅員面積約3 . 5萬平方公里，區域輻射半徑為100公里左右，現階段包括哈爾濱市及周邊的五常市、雙城市、阿城市、尚志市、賓縣和肇東市;社會經濟的發展、開發區的建設以及鄉村城市化的發展共同促成了哈爾濱都市圈的形成;隨著改革開放的深入和全球經濟一體化的不斷深入，哈爾濱都市圈在未來發展中將面臨更多地機遇和挑戰。The second part brings forward a new ar - model - based arm detection method based on features of arm and characteristics of velocity and acceleration of the radar echoes. by establishing two - order ar models, this new detection method computes the poles of models representing different targets, thus estimates the acceleration of the targets so as to determine the nature of the targets. furthermore, this method can not only be applied when the arm is being tracked by radar, but also be put into use in radar ’ s seeking and scanning times
第二部分則是根據反輻射導彈（ arm ）的特點及其雷達回波信號中速度、加速度等特徵，提出了一種新的基於ar模型的arm檢測演算法，該方法通過建立二階ar模型、估計代表不同目標的模型極點，並由此估算目標加速度來判斷目標性質，該方法不僅可以在雷達已跟蹤上arm后採用，而且適用於雷達搜索掃描時使用，模擬結果表明該方法具有解析度高，對雷達脈沖重復頻率（ pulserepetitionfrequency ， prf ）及積累脈沖數要求不高的特點，在低的prf及少的積累脈沖下，利用該方法仍可有效地識別檢測arm 。The thesis points out that while large investment in agriculture has not started, small towns in yuebei mountain area should have pre - consciousness. they can not completely copy the experience of " industrialization of village " in coastal developed area. they should make full use of their specific characteristics and advantages to develop anti - magnetic nucleate towns, so as to strengthen their magnetic force and influence, therefore counter against the strong appeal of factor of production and create conditions to meet the industrial expand from the developed pearl river delta
文章概述了「反磁力型」中心鎮的思想淵源和區域基礎，指出在工業發展尚未達到反哺農業的階段，粵北山區小城鎮應當具有超前意識，利用自身優勢和特色發展「反磁力型」中心鎮，提高其吸引力和輻射作用，從而抗衡沿海發達地區對生產要素的強大吸引力，同時也為下一階段接受珠江三角洲等沿海發達地區產業擴散創造條件，而不能一味地模仿沿海發達地區「農村工業化」的路子。A novel signal processing method based on alternate feature optimization is introduced and analyzed in this thesis. and a new underwater target recognition system using the optimized feature and svm is presented here. the system utilizes the alternate feature extraction method to optimize the feature selection process
提出了高階量1 （ 1 / 2 ）維譜和小波變換交互分析進行特徵提取的方法，比較好地反映了艦船輻射噪聲的非線性、非平穩和非高斯特性。The details of all stages of the proposed image classification methodology were reviewed including image pre - processing ( e. g. acquisition of ground control points and geo - referencing, radiometric correction, image mosaicking, etc. ), data analysis, image interpretation, classification techniques and presentation of results. it is important to understand that using
我們對有關的圖像分類方法的各個階段之細節進行了論述，包括圖像預處理（即：採集地面控制點、地理參照系、輻射校正、影像鑲嵌等） 、資料分析、圖像解譯、分類技術和演示結果等。分享友人