旋磁介質 的英文怎麼說
中文拼音 [xuáncíjièzhí]
旋磁介質
英文
gyromagnetic medium-
Cw the feature of cw magnetic - driving vortex pumps is little capacity, high - head, it can convey the fluid containing 20 percent of gas and non - lubricative, also can be used to the occasion where npsh is low
Cw型磁傳動旋渦泵，是小流量高揚程應用最理想的選擇;可輸送含有20 %氣體的介質，可應用於非潤滑性流體和汽蝕余量很低的場合。Since high tc superconducting ( hts ) tapes for practical applications became commercially available over the past few years, the development of superconducting power technology has achieved significant progress. it is foreseen that superconducting technology will be the prevailing high technology of the 21st century, and that superconducting power equipment will be commercialized soon, enjoying a large - scale worldwide market before 2010. china ' s economy is expanding fast, and the demand for electricity is increasing quickly. at the same time, higher electricity quality will be required. traditional power technology will no longer be able to satisfy future requirements, so superconducting power technology would be the best solution, leading a revolution in the power industry. the history, present status and prospects of superconducting power technology as well as the economic benefits and basic physics problems involved are reviewed
人們認為，超導體在電力方面出現大規模應用的時間距離我們還非常遙遠.然而，隨著最近幾年來實用高溫超導材料的研製取得重大的進展，高溫超導電力技術的應用已經成為現實，預期將在2010年左右出現大規模的應用，並將帶來電力工業的革命.因此，下一個10年將是國際超導技術競爭最關鍵的10年.我國的經濟發展很快，電能需求量增加十分迅速，對電能質量的要求也越來越高.常規電力技術已經無法滿足我國電力發展的需要，超導電力技術是實現我國電力發展目標的必由之路.文章有代表性地介紹了超導電纜、超導限流器、超導磁儲能系統、超導變壓器和超導旋轉電機等的基本工作原理及研究發展歷史，並著重介紹高溫超導電力應用研究的現狀、應用前景、經濟可行性及基本物理問題By magnetoelectric coupling, the application of an electric field or ferroelectric polarization can change one or more of the parameters governing the ma gnetic behavior of the system. correspondingly, being possible magnetostrictive effect or electron - phonon interaction, the fluctuation of spin ordering may lead to a dielectric anomaly and ferroelectric relaxation
通過磁電耦合，鐵電有序或外電場可導致自旋的再分佈而改變系統的磁性性質，同樣由於自旋有序的漲落通過磁致伸縮或可能的電-聲子作用可導致鐵電弛豫或介電異常。By a large amount of calculations, the influence of the structure dimensions and the dielectric parameters on dispersion characteristic and coupling impedance of this kind of slow - wave structure is obtained. then, the linear beam - wave interaction theories of the arbitrarily - shaped helical groove waveguide and the dielectric into the arbitrarily - shaped helical groove waveguide are deduced. by the numerical calculations, the relationship is got between the small signal gain, bandwidth, electromagnetic " hot " velocity and the electronic beam, the structural parameters
通過數值計算，獲得了此類慢波結構的色散特性和耦合阻抗隨結構幾何尺寸和介質參數的變化規律;在此基礎上，建立了任意槽形螺旋槽及中心加介質棒的任意槽形螺旋槽行波管的注-波互作用線性理論，並編製程序，計算了管子的小信號增益、帶寬、電磁慢波的「熱」相速與電子注參數、結構參數之間的關系，獲得了增加帶寬或增益的途徑。It uses the encouragement of step wave or other impulse current field source to produce the transition process field in earth. in the moment of shutting the power it produce the volute alternating electromagnetic field. from the abnormity of measuring the attenuation character of the second induction electromagnetic field, which produced by underground medium with time change, the conductive capacity and the position of the underground non - homogeneous substance can be analyzed
瞬變電磁法（ transientelectromagneticmethod ）是一種時間域的電磁勘探方法，利用階躍波或其它脈沖電流場源激勵，在大地產生過渡過程場，斷電瞬間在大地中形成渦旋交變電磁場，測量這種由地下介質產生的二次感應電磁場隨時間變化的衰減特性，從測量得到的異常分析出地下不均勻體的導電性能和位置，從而達到解決地質問題的目的。In this paper, we first investigate the impurity effect ( ba2 + ) on the dielectric and phase transition properties in srtio3 within the framework of the transverse - field ising model ( tim ). then a possible coupling mechanism between the magnetism and dielectric properties in eutio3 is discussed and the magnetic influence on the frequency of the soft - phonon mode is investigated via the heisenberg model, soft - mode theory under the mean field approximation, the second quantization theory and the perturbation theory. and we proceed further investigation on eu1 - xbaxtio3 of
我們發現baxeul _ xtio3 （ o 『 x 『 0 . 2 ）的介電常數和由內察的偏置場導致的電極化除了隨雜質濃度產生相應的變化，同時在磁和介電性質的藕合作用影響下在低溫下偏離通常的量子順電體行為，在尼爾溫度附近出現異常，且磁場通過對最近鄰自旋關聯的作用來影響介電常數和電極化。The green ' s function of infinite and half - infinite space, the solutions of a cone under concentrated loads at its apex, and rotating circular and annular plate of magnetoelectroelastic medium are obtained by use of these solutions and given boundary conditions
在此基礎上，由平衡問題的一般解和邊界條件，得到了磁電彈性介質無限空間和半空間的green函數解、圓錐體頂端受集中荷載作用的解析解、旋轉圓盤和圓環的三維解析解。In this paper a newly develoed helical coordinates is used to make out the solution of electromagnetic fields in the helix gap and calculate dispersion characteristics of tape helix slow wave structure for the first time. strict boundary conditions for magnetic fields are adopted and are treated rigorously by fourier expansion. besides, the radial propagation constant of every layer in the dielectric - loaded region is differentiated. some of practical tape helix slow wave structures have been calculated for dispersion characteristics and the calculated values accord with measured values very well. the authors also compare the calculated results with experiments for different structures by changing tape thickness or other structure parameters and find that the theory in the paper is universal
本文首次運用螺旋坐標系給出了帶狀螺旋線縫隙內的電磁場解，並據此計算了帶狀螺旋慢波結構的色散特性.文中採用了嚴格的邊界條件，並以傅立葉展開進行了嚴格的數學處理.另外還首次對有介質區域內各層的徑向傳輸系數作了區別.本文使用這種方法計算了我們已研製的一些寬帶高功率行波管所用的慢波線結構的色散特性，理論與實驗符合得很好.我們還計算了不同結構參數對色散特性的影響，並與實驗作了對照，發現本文的理論有一定的普適性分享友人