磁場指數 的英文怎麼說
中文拼音 [cíchǎngzhǐshǔ]
磁場指數
英文
magnetic field index-
First, in virtual of identification of flaws is a typical of in - verse problems, proceeding from time - harmonic electromagnetic maxwell ' s equa - tion and helmholtz equation, the uniqueness and existence of direct scattering problems including the numerical algorithms of diverse of boundary conditions is given. second, the uniqueness and existence of inverse scattering problems and the theory of ill - posed integral equation are briefly looked back upon. finally, indicator function method for boundary identification is set up under all kinds of boundary conditions for inverse scattering of homogenous and inhomogenous objects, meanwhile, the proof of possibility for near - field measurements and nu - merical simulation are given
由於缺陷的識別是一類典型的反問題，因而首先從時諧電磁maxwell方程和helmholz方程出發，具體地闡述了求解正散射問題的有關方法，包括各種（夾雜）邊界條件下的數值解法，就解的存在性唯一性給予了肯定的回答；隨后對逆散射問題的理論作了簡短的回顧，包括解的唯一性以及非線性不適定積分方程的處理等；然後對均勻介質和非均勻介質的逆散射問題建立了在各種邊界條件下的邊界識別的指示函數方法，鑒于近場數據獲得的重要性，對近場測試時邊界識別的方法給予了相應的證明，並且實現了數值模擬。Using piezoresistive accelerometers and magnetoresistance sensors measure the dynamic acceleration and geomagnetic field and through avr mcu software to calculate the attitude angular and azimuth. the fact of affecting the module is discussed in detail in this report and put forward the resolving scheme of key technology of digital filter, linear compensation, temperature compensation and magnetic field adjustment. the digital module has advantages of small size, light weight, low conception, high accuracy, all solid state and high reliability
本課題採用壓阻式加速度計和磁阻傳感器分別測量重力加速度和地磁場，通過avrmcu軟體解算出姿態角和方位角，課題詳細分析了影響模塊性能指標的因素，就數字濾波、線性補償、溫度補償、磁場修正等關鍵的技術問題提出了可行的解決方案，研製的數字化模塊具有體積小、重量輕、低功耗、精度高、全固態、高可靠等特點，所有性能指標均滿足設計要求，為姿態角測量提供了有效的手段。From physical principle, the electric property differences among oil, gas, and water are analyzed, and it is pointed that the electric properties of their mixture in oil wells are not only determined by their electric parameters, but also related to the mixture flow velocity, concentration and distribution state of each phase, and the measured electromagnetic field
其次，從物理機理出發，對油、氣與水的介電特性和導電特性差異進行分析，指出油井內混合流體的電性質不僅與各相流體的電性參數有關，而且與流體的流動速度、各相含量、分佈狀態以及測量電磁場有關。According to the analysis of the relation of between angle momentum and magnetic momentum, we find that a2 dynamo is main mechanism for the stars with deep interior convection zone similarly late - m type stars
從主序星的角動量與以色球活動指數為指標的磁動量間的相關性分析表明~ 2發電機可能是m型主序星磁場產生的主要機制。We give a brief theoretic analysis of using delayed self - controlling feedback to control beam halo. s ( the length of one period of focusing channel ) is selected as the delay parameter of the controller and the maximal lyapunov exponent is calculated
經分析，確定了延遲反饋控制器的延遲參數為s （一個聚焦磁場通道周期） ；而後，計算了系統的最大李雅普諾夫指數。Results show that the levitation force is generated between the high temperature superconductor and the magnetic field under the critical temperature. the value of the levitation force is determined by the temperature and the gradient of magnetic field. that is the smaller of the gap, the larger of the levitation force when the temperature is fixed, and the value of the levitation force is an exponential function of the gap
研究表明，當高溫超導體的溫度低於其臨界溫度時，在磁場中開始受到力的作用；受到的懸浮力大小由溫度和磁場梯度共同決定；即溫度一定時，懸浮間距越小，對應的磁場梯度越大，懸浮力就越大，力的大小與懸浮間距成指數關系；而當懸浮間距一定時，溫度越低，對應的懸浮力也越大，且超導體剛進入超導態的一段溫度區間懸浮力增大最快。After the discussion of the numerical simulation method based on the fdtd method and the pml technique, the motions of the charges and the electrical field lines were first employed to describe the radiation procedures of the pulse electromagnetic waves. then the causes of how the charges are accelerated and how the motion status of the charges are maintained were further studied from the angle of interaction of charge and field. after these analyses, it was pointed out that the pulse radiation is due to the suddenly occurred time - varying electrical field ( displacement current ) in the open space. this view was further evidenced by two examples : one is the partly resistance loaded antenna, the other is the partly curved antenna. the radiation procedures of the pulse electromagnetic waves of many different situations were simulated throughout this paper with the contours and waveforms of electric field given. these figures are very helpful to the understanding of the radiation mechanism of the pulse electromagnetic waves
在討論了基於時域有限差分法和完全匹配層技術的數值模擬方法之後，首先從運動電荷和電力線的角度直觀地描述了脈沖電磁波的輻射過程，然後進一步從場與電荷相互作用的角度分析了天線上電荷是如何被加速以及如何維持其運動狀態的，指出了開放空間中突然出現的時變電場（位移電流）是脈沖電磁波輻射的根本原因.文中還對局部電阻加載的天線和局部彎曲的天線進行了研究，以進一步說明上述觀點.對多種情況下的脈沖輻射過程進行了數值模擬，並給出了電場的等高線和空間波形圖，這些圖形對理解脈沖電磁波的輻射機理非常有益Using the microwave selective heating property for materials, by setup equivalent equation, and first time inducing the electromagnetic field perturbation theory to the design of heating materials for substrate in mpcvd, three temperature distribution modes were established, including temperature distribution comprehensive mode of inhomogeneous plasma, temperature distribution composite mode of composite substrate materials, temperature distribution perturbation mode of composite materials, which ii provided an whole new technology route to the design of substrate heating system in mpcvd and guided the preparation of heating materials for substrate. and then the heating materials for substrate were designed and optimized to obtain large area homogeneous temperature distribution even larger than substrate holder ' s diameter. as an important part, this thesis researched the nucleation and growth of diamond films in mpcvd, systematically researched the effects of substrate pretreatment, methane concentration, deposition pressure and substrate temperature etc experimental technologic parameters on diamond films " quality on ( 100 ) single crystal silicon substrate in the process of mpcvd, characterized the films qualities in laser raman spectra ( raman ), x - ray diffraction ( xrd ), scanning electron microscopy ( sem ), infrared transmission spectra ( ir ), atomic force microscopy ( afm ), determined the optimum parameters for mpcvd high quality diamond in the mpcvd - 4 mode system
該系統可通過沉積參數的精確控制，以控制沉積過程，減少金剛石膜生長過程中的缺陷，並採用光纖光譜儀檢測分析等離子體的可見光光譜以監測微波等離體化學氣相沉積過程；利用微波對材料的選擇加熱特性，通過構造等效方程，並首次將電磁場攝動理論引入到mpcvd的基片加熱材料的設計中，建立了非均勻等離子體溫度場綜合模型、復合介質基片材料的復合溫度場模型及復合介質材料溫度場攝動模型，為mpcvd的基片加熱系統設計提供了一條全新的技術路線以指導基片加熱材料的制備，並對基片加熱材料進行了設計和優選，以獲取大面積均勻的溫度場區，甚至獲得大於基片臺尺寸的均勻溫度區；作為研究重點之一，開展了微波等離體化學氣相沉積金剛石的成核與生長研究，系統地研究了在（ 100 ）單晶硅基片上mpcvd沉積金剛石膜的實驗過程中，基片預處理、甲烷濃度、沉積氣壓、基體溫度等不同實驗工藝參數對金剛石薄膜質量的影響，分別用raman光譜、 x射線衍射（ xrd ） 、掃描電鏡（ sem ） 、紅外透射光譜（ ir ） 、原子力顯微鏡（ afm ）對薄膜進行了表徵，確立了該系統上mpcvd金剛石膜的最佳的實驗工藝參數。Because the magnetic field of the earth is inclined in most places ( it points not only north but also downward in the northern hemisphere and upward in the southern ), a magnetotactic bacterium can follow a magnetic field line up or down to its desired destination
由於地球上大多數地區的磁場是傾斜的（在北半球，磁場不只是往北指，還向下指；在南半球則是向上指） ，磁感細菌可以根據磁場的上下方向，而到達它的目的地。Several influence factors to result plasma drift in hainan were analyzed. in this paper the characteristics of ionospheric parameters variation were analyzed systematically and some new results in storm - time such as seasonal behaviors were obtained ; it is the first time to investigate the ionospheric drift behavior in hainan and some new results was obtained, the relationships between each two plasma drift velocity components in storm time in hainan were found and the electric filed variation in hainan ionosphere also was obtained ; the results also show that there are big differences of the ionosphere parameters bo and bl obtained from the data with that obtained from the iri - 2001 applied for hainan ; a new phenomena was found during a strong magnetic storm, that a layer with very strong electron density and density grad was found during the recovery phase of the storm, its horizontal scale is beyond 100km and temporal scale is about 2 hours, this phenomena repeated 3 times continuously. a type of negative disturbance in high and low latitude but positive disturbance in east - asia also has been found
本文較為系統地給出了海南地區電離層的參數變化特徵，特別是得到了一些暴時與以往不同的季節特性；第一次給出了海南地區的電離層等離子體漂移特徵，發現等離子體漂移暴時擾動在三個方向上有內在的聯系，得到了電場變化曲線；研究結果還表明海南電離層的半厚指數和形狀參數等與國際參考電離層iri - 2001存在很大差別；通過對強磁擾動事件期間的參數變化特性分析發現，在磁暴恢復相期間海南地區電離層底部存在一個電子密度非常大的高密度區，高密度區底部電子密度梯度隨高度急劇增加，該區域的水平尺度可達100公里以上時間尺度約為2小時，連續出現過三次，這是一個在海南從來未發現的新現象；研究還發現了暴時東亞地區電離層擾動會出現高低緯負相而中緯正相的現象。Permanent magnetic spherical stepper ( pmss ) is a novel kind of spherical motor, which has advantages of simple structure, small volume, light weight and high torque etc. the model of magnetic field inside pmss is developed using integral equation method ( iem ) and discrete expressions on field distribution are also derived
永磁步進球形電動機是一種新型的球形電動機，具有結構簡單、體積小、重量輕、力能指標高、控制簡單等優點。本文用積分方程法建立了永磁步進球形電動機磁場的數學模型，導出了用於計算其磁場分佈的離散計算公式。Am chose kingdee software and adopted kingdee ' s six - step method to realize program organization, systematic training, systematic definition, testing - function and running management. under the erp experts " instruction, am reached the first - stage success in the terms of supervision and control of program quality, cost and schedule. therefore the corporation operation circuit has been further standardized, and has highly partaken in the information and improved the manage efficiency
航磁公司選定了金蝶軟體產品，並採用的erp六步實施法，進行項目組織、系統培訓、系統定義、數據準備、試運行和運行管理等，在erp實施專家的指導下，對項目的質量、成本以及進度進行監督和控制，按原計劃取得了第一階段的成功，公司業務流程進一步規范，信息高度共享，公司管理效率明顯提高，財務的監控力度進一步加強，對市場的應變能力提高。The prediction of disastrous space weather is a hot topi c among solar - terrestrial physics and high technological fields. we propose that the future forecasting of the physical conditions that the violent solar disturb ance causes at the earth by propagating in solar wind depends heavily on the num erical method. this paper analyses the existing problems we are facing in the num erical prediction of disastrous disturbance events in solar - terrestrial space, an d then gives some suggestions for future study. for such a purpose, a six step sol ution method is developed to deal with one - dimensional symmetric interplanetary shock dynamics. it should be point out that that initialization of fully self - con sistent 3 - d mhd codes considering the solar - interplanetary - geomagnetic coupled r elations with initial - boundary values at 1r of the global output of solar pl asma and magnetic field using available solar observations is an essential requi rement in space weather operational codes for forecasting purposes
空間災害性天氣的預報是日地物理學界及高科技領域的熱門話題.未來預測太陽劇烈擾動所造成的行星際風暴到達地球空間的狀態勢必藉助于數值方法.淺析了空間災害性擾動事件數值預報存在的問題及未來設想，針對這一目的對一維球對稱問題提出了處理行星際激波的6步求解方法，指出未來空間災害性擾動事件預報模式應是一個基於三維的以真實太陽風為背景自洽建立起來的、以太陽等離子體輸出及磁場全球結構為初邊值、太陽、行星際、地磁因果耦合模式Selecting two articles on this section as its research objects, the thesis makes a deep analysis of these two news texts with “ the urban marginalized ”, a sociological term, as its connecting thread. by telling regular days ’ “ rifles ” of “ the urban marginalized ”, the narration itself comes out to be the presentation of and enquiry into the meaning of common people ’ s life, and overthrows the traditional “ mainstream narration ” in content. the narrative style of “ magnetic structure ” exhibits the living surroundings of the narration body more forcefully, although it dissects the typical linear structure conventionally used in in - depth reports
本文的研究表明，這類報道中的敘述者通過講述「城市邊緣人」日常生活中的「小事」 ，其敘述本身構成對于普通人日常生活意義的呈現與追問，在內容上顛覆了傳統的「主流敘事」 ; 「磁場式結構」的敘述方式，消解了常規深度報道慣用的線性結構，但卻更有力地展示出了敘事主體的生存氛圍，有助於推進受述者閱讀這一群體充滿變數的生活，引發真切感受;語言的修辭性指向意義的播撒，透明樸素的語言中流動著厚重的人文關懷，舒緩細膩的敘述筆調增強了敘述文本的張力。We prove the general characters of gapped system in low temperatures again : near zero temperature, the specific heat and uniform susceptibility take on exponent behavior
我們再一次驗證了有能隙系統在低溫下的普遍特徵：在零溫附近，比熱和零場下的磁化率隨溫度表現為指數上升的現象。And flux distributions and radial force of an induction type bearingless motor is analyzed employing the finite element method. relationships between the radial force and radial force winding currents are influenced by magnetic saturation. it was shown that the generated radial force reaches its maximum value due to magnetic saturation
首次運用有限元方法對該電機進行了深入的研究，充分展現了無軸承異步電機特有的氣隙磁場分佈、驗證了穩定磁懸浮力產生的條件、指出了磁飽和對磁懸浮力的影響、利用有限元方法修正了磁懸浮力數學模型。分享友人