magnetic variation 中文意思是什麼

magnetic variation 解釋
磁變化
  • magnetic : adj. 1. 磁（性）的；（可）磁化的。2. 吸引人心的；有魅力的。3. 催眠術的。
  • variation : n 1 變化，變動。2 變量，變度，偏差。3 【語言】語尾變化；變體，異體；【數學】變分，協變；順列；【...
  1. The common principle is the use of the induction of an electromotive force by the variation of the magnetic flux through a coil.

    一般原理均是使用通過線圈的磁通量變化感應的電動勢。
  2. On the variation of geomagnetic field and magnetic storm

    地球磁場的變化及磁暴現象的探討
  3. Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented

    許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太陽）具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太陽中其流線，即處于對流層的薄的剪切流層在太陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太陽黑子周期.本文也給出了一個新的非線性三維太陽發電機模型
  4. The main results are following : ( 1 ) the variation of clay / silt ratio can indicate the secondary clay action of dust depositions ; the variations of magnetic susceptibility and total fe content are inferred to be records of the changeable intensity of bio - pedogenesis ; the variations of sr content and rb / sr ratio can indicate bio - pedogenesis, dissolving and leaching action ; the content of total organic carbon ( toc ) can reflect variation of climate and vegetation during soil formation, it indicates the intensity of weathering and bio - pedogenesis ; the content variation of caco3 can show the intensity of dissolving - leaching action and secondary deposit, which was noted as pseudomycilia in pores and fissures in the sediment, so it can indicate the intensity bio - pedogenesis quite well. these proxy indexes also reflect obvious regional difference of pedogenic environment and the intensity bio - pedogenesis ; namely, secondary clay action, dissolving - leaching action and bio - pedogenesis are all much stronger in south than that in north

    實驗結果表明：粘粒粉沙比值能很好地指示粉塵堆積物的次生粘化作用；磁化率和全鐵很好地指示生物風化成壤作用； sr和rb sr比值能很好的指示生物風化成壤作用和淋溶作用；總有機碳（ toc ）含量的高低，在一定程度上反應了土壤發育過程中氣候和植被狀況的變化，指示著成壤過程中腐殖質化的程度； caco3含量的變化，可以反映了黃土古土壤形成時的風化成壤作用的強弱程度，指示成壤過程中的淋溶作用和次生碳酸鹽化作用；並且各指標所指示的成壤環境和成壤強度存在明顯的區域差異，即渭河流域土壤的生物風化成壤作用、次生粘化作用和淋溶作用均表現出南部強于北部。
  5. The binding energies and the ground state energies of hydrogen impurity in a lens - shaped quantum dot ( gaas / inl - xgaxas ) under vertical magnetic field using effective mass approximation and variation method have been discussed

    利用有效質量近似、變分法，研究了垂直磁場下透鏡型量子點（ gaas / in1 - xgaxas ）摻入類氫雜質后基態能和結合能。
  6. The difference between the magnetic moments for the samples with respective doping level can be ascribed to the variation of the competition between thermal effect and the magnetic coupling. based on the spin orientation rotation of dy sublattice as well as the antiferomagnetic coupling between dy sublattice and mn sublattice, we successfully elucidate the changes of magnetic structure in perovskite compounds s. electron spin resonance ( esr ) study on perovskite compounds on the basis of chapter 4, we give further study on micromagneticism of dy - doping perovskite compounds la0. 67 - xdyxsr0. 33mno3

    其中第一節簡單回顧了早期對a位雙稀土元素元素摻雜鈣鈦礦化合物的研究，早期研究較多的是替代元素的離子半徑變化上，由於替代離子半徑的改變，使a位平均半徑變ylll化，致使公差因子改變，使mn o長、鍵角變化，晶格效應的作用使化合物的磁性、電性、 cmr效應發生改變。
  7. Based on the variable viscosity properties of magnetorheological ( mr ) fluids with the variation of a external magnetic flied resulted from adjustable and controllable electric current, a magnetorheological vibration isolator is developed

    利用電磁流變流體在外加可調控電流導致不同磁場強度下其粘度可變的特性，研製了一種電磁流變智能隔振裝置。
  8. The magnetic moments per cr atom vary significantly with cr concentration, and the trend of variation is in agreement with that of the experiment

    計算結果表明cr原子的磁矩隨摻雜濃度有明顯的變化，變化趨勢和實驗吻合。
  9. 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。
  10. The variation must in a swimming pool will soon diffuse throughout the pool, a concentration of magnetic field lines diffuses throughout the planet ' s outer core

    與游泳池中一滴有色的染料在池中迅速擴散的方式一樣，一個濃縮的地磁場曲線的擴散遍布地球的外核。
  11. Abnormal magnetic variation

    異常磁變
  12. Annual magnetic variation

    周年磁變
  13. Magnetic lunar daily variation

    磁月球日變
  14. Constant stator magnetic linkage control frequency converter includes power devices utilizing igbt, drive circuit using three - phase drive ic with multiple protection functions. pwm signal formation circuit in the way of voltage space vector control and realized with pld ( programmable logic device ) devices and compensation for the influence of supply voltage variation and stator resistance voltage drop

    其中，恆定子磁鏈控制變頻器的設計中主電路採用功率器件igbt ；驅動電路採用三相多功能集成驅動晶元； pwm脈寬調制信號產生電路採用電壓空間矢量控制方式，由pld器件實現；對電源電壓變化及電阻壓降造成的影響進行了補償。
  15. The sandwiched films with the structure of 2. 5um / 2um / 2um and 2u m / 2um / 2 u m have been prepared by covered - module method. gmi effect will be studied in deposited and annealed samples with variation of magnetic field, driving frequency and current

    用掩膜法制備了每層厚度為2 m和2 . 6 m的三明治膜，將研究退火前後樣品的gmi效應，包括隨磁場、驅動頻率、交流幅值的變化。
  16. According to the electromagnetic induction theory, abrupt variation of current in the transmitter loop will induce magnetic field around it, which is called the first field. in the transmission of the first field, when it meets good conductor target, induce current will be created, which is called erratic current of second current. because the second current changes with time, so it will create new magnetic field, which is called

    對于接收部分，由於瞬變信號具有早期信號幅度大、衰減快，而中晚期信號幅度小、衰減慢的大動態范圍的特點，必須設計適應這種大動態范圍信號的採集電路;為了適應野外工作，系統主控部分採用具有功耗低、高速處理的dsp ，通過高速通用串列介面usb與上位機通訊，實現對整個探測系統的控制。
  17. This paper introduces the formation of magnetic field, polarity reversal, secular variation and the use of geomagnetic polarity reversal or susceptibility in stratigraphic study

    摘要本文介紹了地球磁場的成因、極性變化以及運用極性倒轉劃分對比地層和指示環境。
  18. Computation and test showed that the variation of magnetic force and bearing rigidity increases along with the reduction of axial magnetic gap and the augment of clearance between magnets

    計算和試驗表明，隨著磁隙的減小，磁塊間隙的增大，磁力和剛度的變化增大。
  19. Characteristics of variation and disturbances in low - latitude ionosphere were investigated based on the data observed in hainan under different magnetic activities and solar activities including variations and disturbances of parameters in different ionospheric layers, behaviors of plasma drift and a comparison with other low - latitude ionospheric station. the disturbance propagations from high to low latitude region during magnetic storm time are also investigated with analyzing the data obtained from the east - asian high - middle latitude stations

    本文在觀測數據分析的基礎上研究了不同地磁活動和太陽活動條件下低緯電離層的變化和擾動特性，包括海南電離層各分層的參數變化和擾動特性，電離層漂移的變化特性，並與低緯度地區其他臺站進行了對比分析，還對暴時東亞地區高中緯度地區臺站的觀測資料進行了分析，研究了電離層擾動從高緯到低緯的響應過程。
  20. The effect of these parameters on the variation of final particle size and size distribution, the morphology, magnetic content and magnetic response were investigated in detail

    另外，磁性復合微球的粒徑大小及單分散性還與體系中存在的表面活性劑含量及磁流體含量密切相關。
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