磁通常數 的英文怎麼說

中文拼音 [cítōngchángshǔ]
磁通常數 英文
flux co tant,
  • 磁 : 名詞1. [物理學] （磁性; 能吸引鐵、鎳等的性質） magnetism 2. （瓷） porcelain; china
  • 通 : 通量詞（用於動作）
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. Polarimetric synthetic aperture radar ( polsar ) investigates the transverse vectorial nature of plane em waves and provides the complex scattering matrix of a scatterer. scattering polarimetry is sensitive to the shape, orientation, and dielectric properties of scatters

    極化合成孔徑雷達（ polsar ）研究電磁波的矢量特徵，通過測量和分析目標的極化散射特性，獲取目標的介電常數、物理特性、幾何形狀和取向等方面的大量信息。
  2. At present, differential protection is often used as the main protection for traction transformers. however, the existing of certain factors, such as magnetizing inrush, over - excitation, ct saturation and mismatching of ct ratio, will result in that it is hard to distinguish state current and fault current, and differential protection misoperation or maloperation, then secure operation of electric railways system will be threatened

    目前，牽引變壓器通常採用差動保護作為主保護，但是在某些因數的影響下差動保護並不能準確的區分牽引變壓器內部故障或非內部故障，如故障電流與變壓器處于勵磁涌流、過勵磁， ct飽和及ct變比不匹配等情況下的狀態電流就很難準確的區分，可能造成保護誤動或拒動，從而危及整個鐵道電氣化系統的安全運行。
  3. Analysis for magnetic field of srm is very complicated since the flux waveforms in different parts of the motor vary with motor phase, stator pole and rotor number, also with the winding connections, etc, which results in the srm losses, especially iron loss calculation difficult. the temperature analysis due to the losses has become a study hot spot

    Sr電機鐵心的磁通波形不僅與電機的相數有關，還與定、轉子齒極數、定子繞組連接方式等密切相關，從而使得sr電機磁場分析很復雜，復雜的磁通密度波形導致電機損耗特別是鐵損的計算非常困難。電機的損耗又會引起電機的溫升，因此高性能的sr電機的熱分析也成為目前的研究熱點。
  4. The calculations axe based on the equation of current motion with temperature and field - dependent critical current density, and the heat dissipation produced by flux motion in the normal state region and the superconducting state region

    此計算基於電流運動方程，考慮到電流密度是溫度和磁場的函數，考慮到在正常區和超導區由磁通運動產生的熱耗散。
  5. These test files would normally be used to test data transfer rates, fillers for disk capacities, etc

    這些測試文件通常用來測試數據轉換率，磁盤容量的過濾器等等。
  6. To use an intermediate storage ( magnetic disc ) when making a data transfer between highspeed storage ( usually main storage ) and a device that operates at a lower speed

    當高速存儲器（通常是內存）和低速運行的（外部）設備之間進行數據傳送時，利用中間存儲器（磁盤）作緩沖（的技術或過程） 。
  7. In the actual cases, there are many motors often operate on low load with low power factor and low efficiency, also there are many motors operate on the magnetic flux saturate region with high energy consumption, a large mount of energy used by ac motors is wasted due to all of those factors

    在實際運行中，許多電動機經常處在低效率、低功率因數的欠載運行狀態下，還有許多電機則是鐵芯磁通常進入飽和區的高能耗電機，這些因素均可導致大量電能的浪費。
  8. In many fields, such as remote sensing, nuclear medical, computer tomography, geophysical prospecting, groundwater hydrology, global ocean modeling, image processing, tumor detection, nondestructive detection, the objective of applied sciences and engineering is the recovery of the original signal given a collection of noisy observations of the original signal ; we call these problems inverse problem

    在遙感技術、核醫療技術、計算機斷層掃描（ ct ）技術、地質勘探、地下水文學、電磁輻射、圖像恢復和重構、腫瘤檢測、非破壞性檢測等科學研究和工程實踐中，經常需要根據一組觀測到的數據來估計目標的真實信號，而觀測到的數據往往是真實信號經模糊、失真和加噪等過程后所得的輸出信號，通常稱這類問題為逆問題。
  9. Tested on synthetic example, the results show that the spatial domain data processing methods presented in the thesis have higher resolution than the previous wave number domain methods. 2. wavelet has been discussed, this is a new data processing method and the test on synthetic examples and field data show that it is a good latent method

    通過數值實驗本文認為，用本文空間域的解析延拓和導數的求取方法，在網格尺度相對于延拓高度很小的情況下，對磁異常進行延拓和求垂向導的精度是比較高的。
  10. A total of 18 galleries cover a wide range of science and technology topics including light, sound, motion, electricity and magnetism, mathematics, life science, geography, meteorology, computer, transportation, communication, food science, energy and home technology

    個展區，題材非常廣泛，包括了光聲音力學磁與電數學生命科學地理氣象電腦運輸通訊食物科學能源及家居科技等。
  11. A coherent electromagnetic pulse in the range between the far - infrared and microwave region is used as a detection source. the amplitude of the wave is recorded by electro - optical or photoconductive sampling. after fast fourier transform, the amplitude and phase of the wave is given, then the complex refractive index standing for the absorption and dispersion of the material in thz region is extracted

    Thz （ 10 ~ （ 12 ） hz ）時域光譜技術是20世紀90年代發展起來的一種新型的光譜測量技術，它使用頻率介於遠紅外和微波之間的相干電磁輻射脈沖作為探測源，利用電光取樣或光電導取樣的方法直接記錄thz輻射電場的振幅時間波形，通過傅立葉變換得到測量信號振幅和相位的光譜分佈，進而獲得材料在thz波段的復介電常數，即色散及吸收等信息。
  12. The even or odd mode effective dielectric constant is calculated by inserting the magnetic wall or electrical wall at the lateral boundry

    通過在電路的兩側人為地插入電壁或磁壁，分別解出電路的偶模與奇模有效介電常數。
  13. In the paper, the principle and actualizing means of spatial vector control have been systemically discussed and the control software has also been designed. the magnitude of both the rotor flux and the current in torque component have been estimated by using a flux observer, which is developed based on field orientation control principle. the results show that the observer has a good feature due to its speed being calculated without speed sensor or additional hardware

    本文對矢量控制的原理、控制方法以及控制實施策略進行了較為系統的分析與研究，利用速度間接觀測理論，建立了異步電機的磁通觀測器，電機的定子磁通和電流的轉矩分量可以通過磁通觀測器估算出來，從而得到電機的轉速，並由此建立了異步電機無速度傳感器矢量控制的理論數學模型和相應的控制演算法，在此基礎之上，利用工程中常用的電機專用dsp晶元tms320lf2407作為處理器，對異步電機進行變頻調速控制。
  14. ( 3 ) in order to be suitable for the secrecy of control system, convenient for debugging the control system and make the control system be applied to capacitance, inductance and phase - shifting controlled ozonier, the control system of the ozonier power is based on cpld / fpga chip is presented. ( 4 ) the paper analyzes the shortage of routine inductor designing methods which are used to design intermediate frequency, high voltage resonance reactor, puts forth an iterative method to prevent the problem

    （ 3 ）為解決大功率諧振電抗器的設計困難一直是大功率諧振電源的難點，本文在電抗器常用的ap設計法的基礎上，提出了一種迭代設計方法，這種方法同時考慮氣隙長度范圍和氣隙磁通邊緣效應因數，根據所需電感值來求解滿足要求的鐵芯規格和線圈匝數，不必對電感器的匝數進行修正。
  15. Some applications frequently need to read and write large amounts of data to the disk, which is often the slowest step in a computation

    有些應用程序通常會需要從磁盤中讀寫大量的數據，這通常是整個計算過程中速度最慢的一個步驟。
  16. Berkeley, proposed that in the string picture, magnetic field - like quantities called fluxes, when coiled in various combinations inside the extra dimensions, could generate enough different cosmological constants to include the one we observe

    在弦論中有著類似磁場的通量，當這些通量在額外維度以不同的方式組合時，就能產生許多不同的宇宙常數，多到足以包含我們所觀測到的。
  17. The solving steps are as follows : the field is divided into three regions by the cylindrical surface of the finite - length cylinder and the location of the delta - coils. because " the surface current source is placed at the interface, the non - homogenous restricted equation on the magnetic vector potential is transformed into the homogenous helmholtz equation. by using the method of separation of variables to solve equation and according to the interface conditions and the condition at infinity to determine the unknown constants, the expressions for the magnetic vector potential of the three regions are solved out

    在求解過程中，假定放置式圓柱線圈是由無窮多個對稱圓環線圈密饒而成，首先求解含有有限長磁芯的通電對稱圓環線圈的電磁場：以有限長圓柱磁芯的側面和圓環線圈所在圓柱面為分界面將場域劃分為三個小區域，由於場源放置在內邊界面上，使得關于矢量磁位的非齊次約束方程轉化成齊次亥姆霍茲方程，利用分離變量法求解，根據分界面鄭州大學碩十研究生畢業論文摘要條件以及無限遠條件確定待定常數，從而得到各場區矢量磁位的表達式。
  18. 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。
  19. Prefetchsize determines the number of pages read from disk during a prefetch request and is usually set to a multiple of the extentsize

    預取大小決定在發出預取請求時，從磁盤讀取的頁面數目，通常將之設置為多個區段大小。
  20. These findings complement recent contentious observations that the fine - structure constant, which describes the overall strength of the electromagnetic force, has increased slightly

    這項發現為近來一項引人爭議的觀察做了補充：用來描述電磁力總體強度的精細結構常數，已經些微增加了。詳情請見4月21日的《物理評論通訊》 。
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