dipole source 中文意思是什麼
dipole source
解釋
偶極子輻射源-
A large planar microphone array, which consists of 111 microphones, was successfully applied to obtain a two - dimensional mapping of the sound sources on a landing aircraft. the focus of study in this paper is on the landing gear noise source. the spectra, directivities and sound pressure levels of flap side - edge noise of 7 narrow - board commercial aircraft and 7 wide - board commercial aircraft are presented. it is found that the landing gear noise spectrum is broadband with some single tones in some cases. the directivity of the total sound pressure level of a landing gear noise resembles that of a horizontal dipole. the level differences between the various aircraft landing gears are larger than those expected from the airspeed differences. it is thus expected that the louder noise emission of the landing gears can be reduced by redesigning
應用由111個傳聲器組成的平面傳聲器陣列對當前流行的民用客機進場著陸過程中的機體噪聲源進行了實驗測量，本文對七架窄體客機和七架寬體客機的起落架噪聲進行了分析，得到了起落架噪聲的頻譜特性、指向特性和聲級變化.研究發現，起落架噪聲的頻譜是由寬頻隨機噪聲與一些較為明顯的單音噪聲源組成，起落架噪聲的指向性類似於一個水平放置的偶極子.不同飛機起落架噪聲的聲級相差較大，這說明可以通過重新結構設計降低起落架噪聲。 -
( 5 ) the frequency modulation effects of positive ( negative ) dipole and positive ( negative ) unipole forcing source on lfo have the same sensitive region
（ 5 ）正（負）偶極和正（負）單極對大氣的低頻振蕩調制有相同的敏感區。 -
The unknown source strength of cavitation is always arranged on the propeller blade surface in the solving process, but the integration is carried out along the cavity surface of last iterative step when the strength of cavitation dipole is determined according to dynamic condition
求解過程中待求的空泡源強始終布置在槳葉表面上，而在根據動力學條件求解每一步的空泡麵元偶極子強度時，積分是沿著上一步迭代確定的空泡表面進行的。 -
Abstract : a large planar microphone array, which consists of 111 microphones, was successfully applied to obtain a two - dimensional mapping of the sound sources on a landing aircraft. the focus of study in this paper is on the landing gear noise source. the spectra, directivities and sound pressure levels of flap side - edge noise of 7 narrow - board commercial aircraft and 7 wide - board commercial aircraft are presented. it is found that the landing gear noise spectrum is broadband with some single tones in some cases. the directivity of the total sound pressure level of a landing gear noise resembles that of a horizontal dipole. the level differences between the various aircraft landing gears are larger than those expected from the airspeed differences. it is thus expected that the louder noise emission of the landing gears can be reduced by redesigning
文摘:應用由111個傳聲器組成的平面傳聲器陣列對當前流行的民用客機進場著陸過程中的機體噪聲源進行了實驗測量，本文對七架窄體客機和七架寬體客機的起落架噪聲進行了分析，得到了起落架噪聲的頻譜特性、指向特性和聲級變化.研究發現，起落架噪聲的頻譜是由寬頻隨機噪聲與一些較為明顯的單音噪聲源組成，起落架噪聲的指向性類似於一個水平放置的偶極子.不同飛機起落架噪聲的聲級相差較大，這說明可以通過重新結構設計降低起落架噪聲。 -
( 2 ) the stronger ( weaker ) the intensity of dipole or unipole forcing source and basic flow, the periods of lfo the shorter ( longer )
（ 2 ）偶、單極強迫熱源強度和基流強度的增強（減弱） ，使得大氣低頻振蕩周期有縮短（延長）的趨勢。 -
Then numerical experiments on forcing dissipation and heating response of dipole ( unipole ) are carried out using global spectral model of quasi - geostrophic barotropic vorticity equation. for every experiment model integration is run for 90 days on the condition of three waves quasi - resonance. the results are given as follows : ( 1 ) under the effects of basic flow intensity and dipole ( unipole ) forcing source, there exist strong interaction among the three planetary waves, and there also exist quasi - two - week and intra - seasonal oscillation of the three planetary waves
然後，用數值試驗的方法，應用強迫耗散準地轉正壓渦度方程的全球譜模式，並在方程中考慮了偶（單）極子的熱力強迫作用，在三個行星波準共振的條件下，模式共積分90d ，得出： （ 1 ）在基本氣流強度和偶（單）極強迫熱源的共同作用下，三個行星波之間存在很強的波?波相互作用，且波動振蕩呈現準雙周和季節內振蕩。 -
The current trends of this field is to acquire the current density of dipole distribution rather than a few dipoles. based upon that, a new model was proposed - dipole layer localization method ( dllm ) : spherical dipole layer was used as source model, on which dipoles were distributed by equilateral triangles ; three concentric inhomogeneous sphere was used as head model, which contains scalp, skull and cortex with different conductance. the dipole distribution and scalp potential tomography were obtained with singular value decomposition ( svd )
鑒于該領域的研究趨勢已從求取少數偶極子過渡到偶極子分佈密度的獲得，本文提出了新的模型? ?偶極面定位方法（ dipolelayerlocalizationmethod ， dllm ） ：以等邊三角形均勻分佈的偶極子構成的偶極面（球面）作為源模型；包括頭皮、顱骨和皮層的三層同心介質球作為頭顱模型，運用奇異值分解來求解逆問題，從而獲得偶極子分佈和頭皮電位分佈，實現三維成像。 -
( 3 ) the frequency modulation effects of positive ( negative ) dipole or unipole forcing source on lfo in the mid - high latitudes are difference
（ 3 ）正、負偶（單）極強迫源對中高緯大氣的低頻振蕩調製作用不同。 -
In the simulation study, the parameters of dipoles were given, it would be considered whether it could be recovered correctly by dllm based on scalp potential sampling with a set of electrode array. it was also examined that how electrode number influenced the recovered quality of dipole parameters. the simulation showed that the number, position and strength of dipole set were greatly close to the original condition ; the shallower the dipoles were, the higher the precision of source localization was ; the optimal depth of dipole layer was greatly close to the ideal position ; the accuracy of source localization was increasing when more electrodes were used
在模擬研究中，首先設定已知的偶極子數目及其所在的偶極面深度等參數，然後用一定數目的電極抽取正向計算獲得的頭皮電位，考察該模型在上述理想條件下，基於頭皮電位是否能正確獲取偶極子數目及其參數、以及電極數目對結果的影響。 -
Based the basic principle of the accumulation of induced electric charges across the resistivity discontinuities and the induction current channeling inside the conductive bodies inspirited by the mt field, we set up the relation between the measured field on the earth surface and the distribution of the induced source underground by means of the defining the electric charge occurrence probability function and the electric dipole occurrence probability function and the spacial distributing of the " correlation probability ". the " image " of the field sources underground, or the distributing graphy of the induced electric charges and the induced current in the mesuring area can be drawed, from which we can get the outline of the geological anomaly on the meaning of the probability
大地電磁場概率成像方法是一種新的地球物理成像反演方法，它是根據在大電磁波場的激勵下，地下介質電阻率間斷處產生感應電荷積累和導體內部產生感應電流，從而產生感應電磁場的原理，相應地定義了感應電荷發生概率函數和感應電偶極子發生概率函數，通過「相關概率」發生的大小的空間分佈，建立了地表觀測場與地下場源空間分佈的內在聯系。地下場源分佈概率的「像」 ，即測區的感應電荷和感應電流的概率的分布圖像，就是測區內地質體在概率意義下地質異常體的分佈輪廓。 -
Firstly, sp supposed to be generated by point curl source which is the border of dipole layer rather than the line dipole layer in section view, then, curl source scanning function is given, and image is retrieved by probability tomography approach
首先把剖面上偶極層的線分佈產生的場看作是偶極層的邊緣旋度源的點分佈產生的場；然後給出旋度源的掃描函數，用概率成像方法對旋度源進行成像。 -
( 4 ) the frequency modulation effects of positive dipole ( unipole ) forcing source on lfo is stronger than negative dipole ( unipole ), and the wave oscillation quicken evidently
（ 4 ）正偶（單）極強迫源對大氣低頻振蕩的調製作用強于負偶（單）極，波動振蕩明顯加快。 -
Analysis and comparison of the different source location point ' s thin - wire dipole antenna
不同饋點的細線偶極子天線的分析與比較 -
According to basic theories for distributing regular of electric field about surface single spot current source and high density resistivity prospecting method in this paper. put forward an installation which use one current electrode or dipole current electrodes and the others prospecting at the same time to realize high density resistivity method by office date processing, such as wenner pole - dipole a, wenner pole - dipole b, wenner alpha, wenner beta, wenner gamma and pole - pole array
摘要運用地面點電流源電場的分佈規律和高密度電阻率法的基本思想，提出了分別利用單極供電、偶極子供電，其餘電極同時測量，通過室內數據整理實現高密度電阻率法的溫納對稱四機、溫納偶極、溫納微分、溫納三極a 、溫極三極b和二極等裝置。
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