magnetic value 中文意思是什麼
magnetic value
解釋
磁調-
Firstly, in spherical coordinate system, the sovp formulation for the time - harmonic electromagnetic fields of the current dipole in conductive infinite - space is derived, using reciprocity theorem and transforming relations between special functions. then, selecting appropriate coordinate system, using superposition principle, the boundary - value problem of modified magnetic vector potential on the problem of a time - harmonic current dipole in spherical conductor is solved and analytical solution is obtained. finally, by means of the addition formulas of legendre polynomial and spherical harmonics function of degree n and order 1, the analytical solution in spherical coordinate system specially located is transformed into that in spherical coordinate system arbitrarily located
首先利用特殊函數間的轉化關系和互易定理推導得到了無限大導體空間中球坐標下時諧電流元電磁場的二階矢量位形式：然後利用疊加原理，選擇合適坐標系，求解了導體球中時諧電流元的修正磁矢量位邊值問題，得到了問題的解析解；最後依據不同坐標系下電磁場解的轉化原理，藉助勒讓德多項式和n次1階球諧函數的加法公式，將坐標系特殊安放時的電磁場解析解變換到坐標系一般安放時的解析解，給出了球內電場和球外磁場的並矢格林函數。 -
The diagnostic value of magnetic resonance imaging for aortic dissection
磁共振對主動脈夾層的診斷價值 -
Value of 1h magnetic resonance spectroscopy in diagnosis of multiple sclerosis in brain
磁共振波譜在腦多發性硬化診斷中的價值 -
It also roundly researched the solution of the helmholtz equation in the circumrotating ellipsoidal coordinates, and discussed how to calculate the solution of the electro - magnetic field in the circumrotating ellipsoidal coordinates using special functions, and researched circumrotating ellipsoidal cavity ’ s latent value and quality parameter using arithmetic simulation, finally we compared the ellipsoidal cavity with the spheriform cavity. the main content of this thesis are as following : 1. calculated the distribution of the electro - magnetic field inside the ellipsoidal cavity based on maxwell equations and boundary conditions, and confirmed the syntonic mode inside the ellipsoidal cavity using arithmetic methods
本文從maxwell方程及其邊界條件求解出橢球腔內的電磁場分佈，較為全面的研究了旋轉橢球坐標系下赫姆霍茲方程的解的問題，討論了用特殊函數來求解旋轉橢球坐標系下電磁場的解，並通過數值模擬研究了旋轉橢球諧振腔的本徵值和品質因數，並和球形諧振腔做了比較，主要內容為: 1 .用maxwell方程及其邊界條件求解出橢球腔內的電磁場分佈，並且分析了橢球腔內的諧振模式。 -
Diagnostic value of 3d - contrast enhancement magnetic resonance angiography in arteriosclerosis obliterans of lower limb
在下肢動脈硬化閉塞癥中的診斷價值 -
However, the speed of penetration is equal to predicted value by fluid theory only in c + + plasma with uniform density profile. on other conditions, strong two - dimensional effects, electrostatic accelerating, magnetic pressure and plasma pressure should be included in the fluid analysis
不過，值得注意的是僅有均勻分佈的c ~ （ + + ）等離子體條件下，磁場滲透速度與簡化流體理論分析結果基本相同，而其它條件下的磁場滲透速度均與理論結果存在一定的差異。 -
After studying the relation of distributive function and density matrix, the electron energy is calculated in magnetic field according to the distributive function in the thermodynamic statistical physics and the density matrix average value principle in the quantum mechanics, respectively
摘要研究正則系綜中的配分函數與密度矩陣的關系，分別採用熱力學統計物理中的配分函數和量子力學中的密度矩陣與平均值原理，計算電子在磁場中的能量。 -
It indicates that these materials are optimum cadidate for application. the magnetostriction of terfenol - d was calculated based on the model of magnetic domain turning and the model of magnetic domain wall motion respectively. the experiment value is consistent with that of calculation in low magnetic fields
應用磁疇轉動模型和疇壁位移模型計算了terfenol - d的磁致伸縮，計算結果表明在低磁場下，應用疇壁位移模型得到的計算結果與實驗結果符合較好。 -
" the value of the magnetic telegraph in war cannot be exaggerated, " sherman wrote in his memoirs
我們不可誤用這個特別的機構。在使用武力時，我們必須行動果決。 -
Purpose : to demonstrate the value of multi detector computed tomography ( mdct ) and magnetic resonance imaging ( mri ) in the preoperative work up of temporal bone tumors and to present, especially, ct and mr image fusion for surgical planning and performance in computer assisted navigated neurosurgery of temporal bone tumors
目的論證多探頭計算機斷層掃描（ mdct ）和核磁共振成像（ mri ）在顳骨腫瘤手術前設計的價值，尤其是顳骨腫瘤計算機輔助導航神經外科手術路徑的設計。 -
Value of proton magnetic resonance spectroscopy on the diagnosis of mitochondrial encephalomyopathy
質子磁共振波譜對線粒體腦肌病的診斷作用 -
The atom of which number of valence electron is half of the sub - layer of electron has magnetic entropy value according to the theoretic calculation
根據理論計算，價電子為半滿的原子全形動量量子數j值比較大，從而有大的磁熵值。 -
The research history of fullerene and cnts was short, but their characteristics have great value in practical application. metallic nano - particles have different crystal orientation with different synthetical techniques. their special mechanical, optical and electrical properties will drive the development of magnetic materials, electronic materials and optical materials et. al
納米金屬粒子在不同的制備工藝下具有不同的結晶形態，而且其具有的特殊的力、熱、光、電、磁的性質，引起了在磁性材料、電子材料、光學材料、高緻密度材料等方面的應用。 -
These particles will aggregate into a certain structure when the applied field yields a critical value. the other is fabricated from " half - metallic " oxides, i. e., ferromagnetic oxides which are predicted theoretically to be completely spin - polarized and really found experimentally to have very high spin - polarization. when a magnetic field is applied to half - metallic granular systems, the resistance will drop rapid and dramatically, which is called the extrinsic magnetoresistance effects in half - metallic granular systems
在磁性材料中，亦有由在理論上具有完全的自旋極化率、在實驗中也被證實具有高自旋極化率的一系列半金屬氧化物材料構成的多晶、粉末等顆粒體系，被發現能在外磁場下發生顯著的電阻下降，即半金屬氧化物顆粒體系中的外稟磁電阻效應。 -
In this thesis, studies are made on the problem of time - harmonic electromagnetic fields excited by an arbitrary current dipole in spherical conductor. the problem is presented in eddy - current nondestructive test and geophysical prospecting. under the condition of magnetic quasi - static state, the boundary - value problem about modified magnetic vector potential is solved and the analytical solution is obtained
本論文針對渦流無損檢測和地球物理勘探領域用到的球導體中時諧電流元的電磁問題做了研究，在磁準靜態近似下，求解了修正磁矢量位的邊值問題，獲得了問題的解析解，並利用通用有限元分析軟體做了數值驗證。 -
Value of magnetic resonance cholangiopancreatography in the diagnsis of bile obstruction
磁共振胰膽管成像診斷膽道梗阻性疾病的價值 -
Against a prototype which is being produced ， its three dimension end region entity model of stator is established ， and with the aim of simplifying calculation ， the theory of how to simplify entity model is studied ， then the theory is made use of ， and the end region entity model of stator is simplifi - ed ； meshing characteristics of three dimension entity model and shortcomin - gs of end region entity model of stator are studied ， then meshing method of three dimension end region entity model of powerformer stator is studied as well ， and the simplified entity model is meshed with this meshed model ， the distribution of end region magnetic field of stator is analyzed ， and the magnetic field energy and reactance of powerformer end region are calculated and compared with design value because the prototype is being produced ， in this paper ， stator core ， gap and eddy equipment are not taken into consideration ， and this has a little influence on the result ， but through analysis ， the result is proved to be good through the example calculation ， it is known that the method of this paper is useful and through theoretic analysis ， it is proved that end region
針對一臺生產中的樣機，對其建立了定子端部三維實體模型，而且為了達到簡化計算的目的，研究了如何將其簡化的理論，並應用這些理論對樣機定子端部實體模型進行了簡化；研究了三維實體模型的剖分特點和定子端部實體模型存在的缺點，在此基礎之上，研究了對簡化的powerformer定子端部三維實體模型的剖分方法，並且對簡化的實體模型進行了剖分。應用剖分的三維實體模型，用有限元法分析了powerformer定子端部的磁場分佈，計算了端部區域的磁場儲能，並利用磁場儲能計算了powerformer定子端部漏抗，將計算值與設計值進行了比較、分析。由於樣機處在設計生產階段，本文暫時沒有考慮定子鐵心、氣隙和渦流器件對端部磁場的影響，這對分析結果有一定的影響，但是仍然得到較好結果。 -
In this paper ， the design characteristics and development situatution of powerformer are introduced ； the structure of prototype is studied ， and three dimension end region entity model of powerformer stator is established ； the theory of analyzing end region eddy magnetic field of stator by finite element method is studied ； end region magnetic field of stator is analyzed and the numerical value of end region leakage reactance of stator is calculated
本文介紹了powerformer的設計特點和發展現狀；研究了其樣機本體結構，並建立了定子端部三維實體模型；研究了用有限元法分析定子端部渦流磁場的理論基礎；用有限元法分析了定子端部磁場並計算出了定子端部漏抗值。 -
When a ferromagnetism items is under the application of stress, the phenomenon that the tangential component of magnetic leakage field has maximum value and that the normal component of magnetic leakage field changes polarity and acquires zero value at the stress concentration zone will take place
鐵磁性工件在受到應力作用時，在應力集中處會有漏磁場的切向分量出現最大值、同時法向分量改變符號且過零值點的現象。 -
We find that virial theorem values decrease quickly as magnetic value is increased
此外我們證明在加磁場后維里定理值變小。
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