磁偶極時 的英文怎麼說
中文拼音 [cíǒujíshí]
磁偶極時
英文
magnetic dipole time-
The approximation analysis result of band dipole model is obtained on the basis of the theory of mfl. the electromagnetic distribution feature of the defect in the steel panel is studied by means of simulation. the leakage magnetic distribution of the two defects and four defects plural and the defects in the column differently in the width are also assayed. conclusions that factors affecting flaw magnetic leakage to the panel also affect the column and magnetic leakage bx should be the feature of the flaw identification to several flaws are drawn
在對漏磁檢測原理進行詳細介紹的基礎上，得出了帶偶極子模型的近似解析解，並以有限元數值模擬分析為主要手段，以鋼板上缺陷為對象，分析了各因素對缺陷漏磁場產生影響的不同規律，同時模擬分析了板上平行的兩條裂紋，四條裂紋以及柱體上寬度不同時的裂紋的漏磁場分佈特徵，得出結論:影響板上缺陷漏磁場的諸因素會對柱體上缺陷漏磁場產生同樣的影響;對于多條裂紋，宜用漏磁分量bx作為缺陷識別的特徵量。The poynting vector that represent the flow of electromagnetic power density on a sphere from a linear dipole antenna is approximated by the summation of the field of segmented line current as hertz dipoles
以赫芝偶極之電磁場合成任意長度偶極天線在球面上電磁功率密度流之時變玻因亭向量。Only on rare occasions do the thermodynamics work ; the fluid motions and the magnetic field all evolve in a compatible manner, so the new dipole polarity can diffuse in and establish a reversed magnetic field
只有在很少的情況下熱力學才發揮作用，此時流體運動和磁場都會以相互訪調的方式演化，這樣新的偶極性就會散開並建立一個倒轉的磁場。In this application, the lorentz force generated by the interaction between the current in the wire and the geomagnetic field produces an electro - dynamic drag leading to a fast orbital decay. in this paper, we make an intensive study of the process of de - orbiting using electro - dynamic tether system. the concrete work includes : firstly, i have studied the basic principle of how to generate the electro - dynamic drag, modeled via accuracy geomagnetism, made a concrete analysis of the de - orbiting duration, the magnitude and direction of electro - dynamic drag under the action of the dipole and accurate geomagnetic models, set up a counterbalance between electro - dynamic torque and gravity gradient torque, emulate the de - orbiting process of spacecraft, and compared the change of six orbital factors and the de - orbiting duration under the action of the dipole and accurate geomagnetic models
本文對基於電動力纜繩的航天器離軌過程進行了深入研究，具體工作如下:首先，本文研究了電動力纜繩產生電動力拉力的基本原理，建立了精確地磁場模型;分別在偶極子模型和精確地磁場模型作用下，對電動力拉力的大小、方向、離軌時間及電動力纜繩傾角的大小進行了計算分析;建立了電動力力矩與纜繩系統重力梯度力矩的平衡關系;分析了電動力力矩為系統提供能量的原理;最後分別在偶極子地磁場模型和精確地磁場模型作用下，對受電動力纜繩作用的航天器的離軌過程進行模擬，分析了在不同精度地磁場模型下，航天器離軌過程中各軌道參數的變化情況，並比較了不同模型對離軌時間的影響。Based on an analysis of the formation mechanism of induced current in underground pipelines, the author holds that, where underground media show very poor conductance, underground pipelines are dominated by magnetic dipole lines, and where underground media have certain conductance, pipelines are equivalent to electric wires
摘要通過對地下管線中的感應電流形成機理分析，本文認為，當地下介質導電性很差時，地下管線以磁偶極線為主；而當地下介質存在一定的導電性時，管線則等效于電流線。We describe how magnetic fluid ' s inner structure transforms with the time under all kinds of conditions using magnetic dipole model and magnetic chain model. and using effect field theory we analyze the mechanisms of the magnetic particles being chains, change of the chains and reciprocity in chains. so we can make out that the transmissivity varies with the magnetic fluid ' s inner structure
利用磁偶極子模型和磁鏈模型描述了磁性液體在各種條件下內部結構隨時間的變化，並用有效場理論解釋了磁性微粒成鏈，鏈的變化以及鏈間相互作用的機理，從而說明了由於磁性液體內部結構變化導致的光透射率的變化。The general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod, tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges
簡述20年來中國無損檢測中磁偶板子理論研究的概況和進展，主要介紹磁偶極子，有限長磁偶極線和極帶，磁粉顆粒的受力，磁化場方向對磁粉顯現缺陷的影響，棒料、管材和方鋼的縱向磁化，工件表面溝槽深度對其引起漏磁場的影響，周向磁化時工件底棱上的雜亂顯示成因，圓盤邊緣柱面上溝槽內外漏磁場的解析表達式和針狀磁介質對兩個點磁荷間磁力的影響等。Occasionally, however, the dipole part of the field reverses, causing the locations of the north and south magnetic poles to switch
不過，有時候磁場的偶極部分會倒轉，導致了北磁極和南磁極的位置轉換。In the following section, the thesis demonstrated the robustness of the proposed method in the computation of radiated electromagnetic fields of switched mode power supplies by means of a numerical study on the electromagnetic fields of an electric dipole antenna
應用本文開發基於pml吸收邊界條件三維時域有限差分計算軟體，計算了電偶極子天線的三維輻射電磁場，並將計算結果與解析解進行了對比分析，驗證了時域有限差分法計算高頻開關電源輻射電磁干擾的有效性。Abstract : the general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod, tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges
文摘:簡述20年來中國無損檢測中磁偶板子理論研究的概況和進展，主要介紹磁偶極子，有限長磁偶極線和極帶，磁粉顆粒的受力，磁化場方向對磁粉顯現缺陷的影響，棒料、管材和方鋼的縱向磁化，工件表面溝槽深度對其引起漏磁場的影響，周向磁化時工件底棱上的雜亂顯示成因，圓盤邊緣柱面上溝槽內外漏磁場的解析表達式和針狀磁介質對兩個點磁荷間磁力的影響等。Time - domain radiation models are brought forward for compromising emanation by applying standing wave dipole model and traveling wave monopole model to problem of electromagnetic information leakage. 2
首次將駐波偶極子模型和行波單極子模型引入信息電磁泄漏機理研究，提出了泄漏發射的時域輻射模型； 2The good news is that any disappearance of the dipole will be temporary, the halfway point along a southward swing that would leave compass needles pointing toward antarctica rather than the frozen north
值得慶幸的是，磁偶極場的消失是暫時性的，只是一種磁偶極場在做南北方向對調時，在過程中間所發生的現象。Csm is a numeric mothed of analyzing static electric field. this paper compares the values of capacitance of different size of plate d and plate e in csm and cst mws. mom is a typical numeric method of researching high - frequency electromagnetic problems. accordingly, this paper computes input impedance of plate e and impedance matrix of traditional two element antenna array of electrically small dipoles separately in mom and cst mws, and then compares them detaily
模擬電荷法（ csm - chargesimulationmethod ）是研究靜電場的一種數值方法，本文比較了模擬電荷法和cstmws對cfa的d 、 e兩盤在不同尺寸下的電容的計算結果;矩量法是經典的研究高頻電磁學問題的數值方法，同時利用矩量法計算了cfa的e盤的輸入阻抗和傳統二元電小偶極子陣的阻抗矩陣，將其結果與cstmws的模擬結果比較。This thesis contributed to the comprehensive study of the finite - difference time - domain ( fdtd ) method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies. the work includes mainly three parts : the study on the performance of pml absorbing boundary condition applied to pseudo low frequency electromagnetic problems ; the validation of the fdtd method with pml absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna, and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies ; the development of an improved alternating direction implicit finite - difference time - domain method
在綜合前人工作基礎上，本文對時域有限差分（ fdtd ）法及其在開關電源輻射電磁場數值計算中的應用進行了系統的分析和研究，其核心內容包括：偽低頻電磁場數值計算中pml吸收邊界條件性能的研究；基於基準問題?電偶極子天線三維輻射電磁場，驗證了本文構造的基於pml吸收邊界條件的三維fdtd法及其計算軟體，並應用於高頻開關電源輻射電磁場的數值分析；提出了一種改進的交替方向隱格式時域有限差分法。Viewed at the surface of the model earth, the reversal of the dipole occurred when the reversed flux patches begin to dominate the original polarity on the core - mantle boundary
由模型中的地球表面看來，磁偶極的反轉是發生於地核?地函交界上反向通量斑塊開始超過原本的極性時。分享友人