輻散線 的英文怎麼說
中文拼音 [fúsǎnxiàn]
輻散線
英文
line of divergence-
The works of this paper are mainly about the study for ultra wide - band ( uwb ) signal radiating - designing for effective uwb antenna, and uwb signal scattering - investigating of composite scattering for targets upon ground. firstly, the radiating characters of uwb signal and development of uwb antenna are discussed an uwb planar horn antenna is designed this antenna is characterized with u - balun, simple construction and perfect performance
本文的研究是「九五」國防預研「超寬帶( uwb )雷達體制及關鍵技術研究」項目工作的一部分,主要包括兩方面內容:超寬帶信號的輻射-高效超寬帶天線的研製;超寬帶信號的散射-地表目標的復合散射研究。But it is not the same with surd or the alternation of sonant and surd. on the base of the acoustics, a whole linear time - varying discrete speech produce model is established through anatomising the factors including track, driving source and lip eradiation the mechanism of speech in this paper, and we draw a conclusion that the time between glottal closure is pitch period
本文從聲學理論出發,剖析了語音產生的機理,綜合考慮聲道、激勵源和嘴唇輻射三方面的因素,建立了一個完整的、線性的和時變的語音產生的離散系統模型,得出兩次聲門閉合事件之間的時間間隔就是基音周期的結論。The curve should be three-dimensional one, with the high point in the center and curved lines radiating in all directions, somewhat as streamers from a maypole.
曲線應該是三維的,其高點在中心,向各個方向輻射,有些象從五月柱上散出的彩帶。Backscatter ultraviolet radiometer
後向散射紫外線輻射儀Baoding city north downtown in municipal people government make selection to hand over the a brigade in the municipal with the south, wide railroad in city to the west, the northwest of the wreath postpones to the east of district, developments city ? that market covers 27 acre, a prosperous district, be apart from original flowers and birds the fish the insect the market the shortage a kilometer of, the transportation is convenient, having six hand over the route goes directly to here, exit the highway keeps the 107 country way with wide superhighway in city, near two in the last years, the square circle in that district sets up to have the small area of upscale residence in inside in some one after another inside two kilometers of scopes, living a high income family, intend to see the inside of protecting and settling north downtown of municipal the agriculture makes sight - seeing trip the park the item among them have the flower and grass plant, feeding the fish insect etc. profession park to act in cooperation mutually with it, can become to produce to place on sale a structure and form of dragon. owing to protects the traditional brand effect that settle the municipal history culture a city and create the country of taipei first boys school the excellent traveling the opportunity that city bring, that market sets up the empress not only can satisfy to baoding city the domestic demand in municipal, but also will still radiates city three municipals and perimeter region, become the perimeter region consumption center and commercial center
保定市北市區人民政府選定在市交警支隊以南,京廣鐵路以西,環西北延以東的地段,建設一個高檔的花鳥魚蟲市場。該市場佔地27畝,地處市繁華地帶,距原花鳥魚蟲市場不足一公里,交通便利,有六條公交路線直達此處,出口處公路直通107國道和京廣高速公路,近兩年來,該地帶方圓兩公里范圍內相繼建起了一些中高檔住宅小區,生活著上萬戶高收入家庭,擬見中的保定市北市區農業觀光園項目其中有花草種植,飼養魚蟲等專業園與之相呼應,可形成產供銷一條的格局。鑒于保定市歷史文化名城的傳統品牌效應及創建中國優秀旅遊城市帶來的機遇,該市場建成后不但可以滿足保定市人民的需要,而且還將輻射京津石三市及周邊地區,成為周邊地區消費中心與集散地。Topics include : planets, planet formation ; stars, the sun, " normal " stars, star formation ; stellar evolution, supernovae, compact objects ( white dwarfs, neutron stars, and black holes ), plusars, binary x - ray sources ; star clusters, globular and open clusters ; interstellar medium, gas, dust, magnetic fields, cosmic rays ; distance ladder ; galaxies, normal and active galaxies, jets ; gravitational lensing ; large scaling structure ; newtonian cosmology, dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis
課程的主題包含了:行星、行星形成;恆星、太陽、正常的恆星、恆星形成;恆星演化、超新星、緻密天體(白矮星、中子星及黑洞) 、波霎、雙x -射線源;星團、球狀及疏散星團;星際介質、氣體、塵埃、磁場、宇宙射線;距離階梯;星系、正常及活躍星系、噴流;重力透鏡;大尺度結構;牛頓宇宙學、宇宙的動力膨脹及溫度發展歷史;宇宙背景微波輻射;大霹靂核合成。Based on the geometry between sunshine ray and real terrains, the distributed models were developed to simulate the extraterrestrial radiation and possible sunshine duration over rugged terrains respectively. according to the principles of direct and diffuse radiation on tilted surfaces, the distributed models to estimate the direct and diffuse radiation over rugged terrains were developed also. the proposed models were proved to be able to treat volumes of data and are applicable to satellite image processing platforms or geographic information system ( gis )
起伏地形下太陽輻射分散式模型研究根據太陽光線與實際地形之間的幾何關系,建立了起伏地形下天文輻射、可照時間的分散式估算模式;依據坡地直接輻射和散射輻射機理,分別建立了起伏地形下直接輻射、散射輻射的分散式估算模式;建立的分散式模式計算結果可靠,可進行大數據量處理,適用於遙感圖像處理、地理信息系統等數據處理平臺。Telecommunications - fixed radio systems - point - to - point and multipoint systems - spurious emissions and receiver immunity limits at equipment antenna port of digital fixed radio systems v1. 2. 1
電信.固定無線電系統.點對點和多點系統.數字固定無線電系統的設備天線埠的雜散輻射和接收器抗干擾限值In this paper, the target radiate characteristics and waveband selection of the infrared system reviewed briefly ; the suppression of the stray radiation in the infrared sub - system is discussed ; the material selection, the support structure and optimization of the primary mirror in the infrared sub - system of the theodolite, every factor which will affect the surface figure of the mirror is discussed in detail and get the result that in the circumstance of shooting range, the primary factor which affects the surface figure of the mirror in the infrared sub - system is temperature changing, this ca n be resolved by using material of low expansion coefficient and using same material in the mirror and the mirror seat
本文將對紅外系統的目標輻射特徵分析和波段選擇進行簡要回顧,討論紅外系統中雜散輻射的抑制,並詳盡分析經緯儀紅外光學系統設計中所涉及到的反射鏡的材料、支撐、結構和優化設計等問題,認真討論和分析影響主鏡的面形精度的各種可能因素。並指出:在靶場環境下影響經緯儀紅外分系統主鏡面形精度的主要原因是溫度的變化,這種情況可通過選擇低線膨脹系數的材料並且使鏡座和反射鏡採用相同的材料予以解決。Determination of sulphur dioxide by absorption of a non dispersive infra - red radiation beam
非擴散紅外線輻射束吸收法測定二氧化硫This dissertation presents an improved method to study distribution network reconfiguration ( dnrc ) based on a refined genetic algorithm ( rga ). structure variable dissipated network ( svdn ) is applied as simplified model of distribution network
採用變結構耗散網路作為配電網簡化模型,並在該模型的基礎上實現了網路接線分析、網路輻射狀和無孤島判斷演算法。We presents a detailed studied of the linewidth of parametric light in clbo - opo caused by the linewidth of pumping beam, off axis phase matching, divergence angle of pumping, time above threshold, high gain coefficient of nlo crystal, fluctuate of cavitylength, spontaneous radiation, according to the momentum and energy conversion laws, and the sellmeier equations of the clbo, we calculated curves of the type - i and type - ii compared with the bbo ' s
根據能量動量守恆關系和clbo的色散方程,詳細分析了由於泵浦光的線寬、泵浦光偏軸泵浦、泵浦光的發散角、泵浦光功率超過參量光振蕩閾值一定倍數、高增益系數、有效腔長波動以及自發輻射引起的參量光線寬,並得到了與bbo晶體在類、類相位匹配下比較的理論曲線。This paper uses an optically modulated scatterer system to measure microwave field with minimal disturbance. this method is especially adapt to measure magnitude and phase of microwave field close to conductor and microwave field with complex path between source and field. so it can be used to measure radiation antenna ’ s near - field and microwave into slots
光調制散射器的測量方法最大限度地減少了測量裝置對被測場的擾動,特別適合於測量導體附近和具有復雜路徑場的幅值和相位分佈,可以用於對輻射天線近場的測試以及孔縫耦合中場的測量,可為天線的設計,微波孔縫耦合效應的研究提供較精確的實驗數據。This technique combines the edge - based finite - element method with physical optics ( po ) and physical theory of diffraction ( ptd ). the hybrid technique is applied to compute the scattering fields from the electrically large bodies with cracks and cavities on their surfaces. it is also used to analyze the scattering characteristics of microstrip antennas residing in a cavity mounted on metal objects with finite sizes
本文採用edge - basedfem為基本方法,結合物理光學法( po ) 、物理繞射理論( ptd ) 、邊界積分方程( bi ) 、區域分解技術( ddm )和完全匹配層( pml )吸收邊界條件等求解方法構成的混合方法,對電磁散射和輻射問題進行了研究,主要包括以下內容:提出了一種edge - basedfem與物理光學方法和物理繞射理論相結合的混合方法? fem po - ptd方法,並將該混合方法應用於帶有腔體或槽縫的電大尺寸導體目標的電磁散射特性分析和位於有限導體目標上的背腔式微帶貼片天線的電磁散射特性分析。This dissertation is focused on the radiation problems of various kinds of wire antennas mounted on the complex - shaped pec platform and the scattering problems of complex - shaped electrically - large pec targets based on the theory of method of moments
本文主要應用基於電場積分方程( efie )的矩量法( mom )研究復雜形狀的金屬載體上多種線天線的電磁輻射問題以及復雜形狀金屬目標的電磁散射問題。Life time of mn2 + in nano - zns was measured and was found to be close to that of the bulk materials. therefore the quenching centers quench the exciton but not the mn2 + ion self. 2. the increasing curves are different in film and ethanol colloids because there is diffusion process of quenching centers in colloids
對薄膜樣品的熒光增強曲線的擬合表明,顆粒表面猝滅中心數目隨輻照時間的衰減函數是非e指數形式;同時考慮溶液中猝滅中心通過向顆粒表面的擴散而逐漸耗盡,很好地解釋了溶膠的增強曲線與固體薄膜的增強曲線的不同。A new terahertz source of folded waveguide traveling - wave - tube which based on vacuum electronics is introduced, which may answer the question for scarcity of small, economical terahertz source with continuous wave of high average power. secondly, transmission characteristics of terahertz wave in the periodic slow wave circuit of folded waveguide traveling - wave - tube have been researched combined with development of micro - fabrication technology. dispersion relation and interaction impedance of the slow wave circuit are deduced by the way of equivalent circuit, and results accounted by theory are close to those simulated by software
其次,結合計算機模擬技術對這種新型太赫茲輻射源的折疊波導慢波線路傳輸特性進行研究:用等效電路法從理論上推導了慢波電路場、色散關系及線路耦合阻抗,電磁模擬軟體計算得出的慢波電路色散曲線與理論計算所得結果基本上一致,表明這種尺寸的慢波電路在太赫茲頻段有著色散曲線較平坦以及寬帶、低損耗的良好傳輸特性。Using time - dependent mode matched scattering matrix method and based on the theory of the interaction between atom and electromagnetic field, we predict the effect that the longitudinal transport of electron is partly blocked by the lateral emitting electromagnetic wave and give detail analysis of the mechanism and the feature of the effect
第三章我們以光和原子相互作用理論為基礎,用含時模式匹配散射矩陣方法研究了直量子線在太赫茲電磁場部分輻照下的電子輸運性質,並得出橫向電磁輻射對電子縱向運動的阻塞效應。In this dissertation, the radiation problems of wire antenna mounted on the arbitrary shaped conducting platform and the scattering problems of arbitrary shaped conducting objects are analyzed using impedance matrix interpolation with the moment method
本文應用矩量法結合阻抗矩陣插值技術,快速有效地求解實際工程問題中常見的任意形狀金屬目標的電磁散射問題及金屬載體上線天線的電磁輻射問題。In the process of research, the paper made the model according the relationship between the beam and real topography considering the mountains " gradients and directions. later the paper calculated the distribution of astronomical radiation of chongqing
在重慶地區天文輻射空間分佈研究中,根據太陽光線與實際地形之間的幾何關系,利用dem數據,在充分考慮山地坡度、坡向和遮蔽等影響的基礎上,建立了起伏地形下天文輻射分散式估算模型。分享友人