磁場變動 的英文怎麼說

中文拼音 [cíchǎngbiàndòng]
磁場變動 英文
field variation
  • 磁 : 名詞1. [物理學] （磁性; 能吸引鐵、鎳等的性質） magnetism 2. （瓷） porcelain; china
  • 場 : 場Ⅰ名詞1 （平坦的空地 多用來翻曬糧食 碾軋穀物） a level open space; threshing ground 2 [方言] （...
  • 磁場 : [物理學] （傳遞運動電荷或電流之間相互作用的物理場） magnetic field
  1. As a result, the electromagnetic field intensity is changed accordingly and fluctuating current in the damper coil is created. damping force is mostly produced because of the phase difference between fluctuating current and displacement of rotor. the formulas of fluctuating current and damping coefficient are deduced theoretically, and the calculated results are consistent with the experimental results

    通過分析發現電磁阻尼器線圈內由於轉子渦動時變化的磁場而產生的波動電流與轉子位移間的相位差是產生阻尼的主要原因，推導了波動電流、阻尼系數的計算公式，並通過實驗展示了被動式電磁阻尼器的阻尼效應。
  2. For obtaining the numeral solutions of round elastic plates in axisymmetrical deformation with varying - thickness in nonlinear deformation in the unsteady electromagnetic field and mechanical field, by establishing the equations of motion, the equations of distortion, the equations of lorentz force, the equations of electronic dynamic mechenical, and adopting iterative method, we gained the nonlinear magneto - elastic calculation method and outcome of current - carrying shell, and gained the influencing degree toward mechanical parameter of varying thickness round ferreous plates in the electromagnetic field and mechanical field

    摘要為了獲得內邊界固定的環形導電薄板在均布力與橫向磁場作用下的變形問題的數值解，通過建立運動方程、變形方程、電動力學方程和洛侖茲力方程，運用迭代法得出了載流板殼的非線性磁彈性的計算方法和結果，以及機械場、電磁場對鐵質變厚度圓板各力學參量的影響程度。
  3. The results illustrate that in the driven magnetic reconnection process generated by the dawn - dusk electric field in the magnetotail, the transportation of magnetic helicity flux via the boundaries of the system is the direct cause of the change of the total magnetic helicity in the system

    研究表明，對于由晨昏電場?生的磁尾驅動重聯過程，通過系統邊界輸運的磁螺度通量是引起系統總磁螺度變化的直接原因。
  4. 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
  5. The experiments on the effects of the uniform magnetic field in mice autonomic action and nembutal subthreshold - hypnosis was carried out. the results showed that the field had definite effects of sedation and hypnosis

    用均勻交變磁場對小白鼠的自主活動及戊巴比妥鈉閾下催眠影響進行了實驗研究.結果表明，所用磁場具有一定的鎮靜、催眠作用
  6. If the moving fluid in a newborn neutron star also transfers a tenth of its kinetic energy to the magnetic field, then the field would grow stronger than 1015 gauss, which is more than 1, 000 times as strong as the fields of most radio pulsars

    如果在新生中子星里的流體，也把10 %的動能轉變成磁場的話，磁場強度會上漲到超過1015高斯，這是大多數無線電波霎所帶磁場強度的1000倍以上。
  7. Automatic field rheostat

    自動磁場變阻器
  8. The effect on display characteristic made by thermal deformations of the shadow mask is comprehensively investigated. by using the electron beam distribution automatic measurement system with a micro - deflective coil, a concave spot in luminance distribution can be get. it changes its position when the shadow mask changes its form

    本文系統全面地分析了傳統蔭罩的各類熱變形對顯示屏特性的影響，利用本文研製的電子束亮度分佈自動測試系統，附加一個微偏轉磁場，使相鄰兩電子束打在同一顏色的熒光粉條，並形成一個亮度凹點，當蔭罩變形時，凹點位置作相應的位移，以此原理跟蹤測量凹點位移量，即可得到色純漂移動態變化曲線。
  9. In theoretical analysis, the motion of radially - emitted electron beam in diode region and drift region has been analyzed, and the relation between radial momentum or current of electron beam and the guiding magnetic field has also been studied, then the possibility to optimize the guiding magnetic field has been derived. the motion of radially - emitted beam electrons in smooth bore magnetron and smooth bore milo has also been studied theoretically. at last, the motion of radially - emitted beam electrons in compound axial and azimuthal magnetic field has been studied

    在理論分析中，初步分析了軸向發射條件下電子在二極體區域和漂移區的運動規律，電子徑向動量隨著外加磁場變化的規律，以及電子束電流隨著外加磁場的變化規律，還有二極體區域磁場優化的可能性;分別研究了有軸向磁場時以及有角向磁場時徑向發射的電子在光滑陽極結構中的運動規律，最後分析了在軸向和角向復合磁場中電子的運動規律。
  10. The conclusion that the electromagnetic field is a covariant entia is drawn from the analysis of the forces acting on a moving charge beside a straight carrying wire in several frame of references by special principle of relativity

    摘要利用狹義相對論分別對同一載流直導線外一個運動電荷的受力情況在幾種常用的參考系中分析，得出電磁場是一個協變的統一體的結論。
  11. Then we in - vest gate seiberg - witten map, which defines the equivalence relation of the gauge symmetries in different spaces. we also analyse the u ( l ) gauge electromagnetic field in noncommutative space. finally we discuss the ambiguities of seiberg - witten map, and find although that some part of the ambiguities can be absorbed by gauge transformation and hence negligible, the existence of the matter field makes some other parts difficult to be absorbed by gauge transformation or field redefinition

    然後利用seiberg - witten映射，我們研究了不同空間的規范對稱性的等價問題，並對非對易空間的電磁場進行了微擾分析，最後我們對seiberg - witten映射的松動進行了討論，研究發現這些松動中的一部分可以由規范變換吸收因而是可以忽略的，由於物質場的存在，另外一部分很難用規范變換和場的重定義吸收。
  12. The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed

    本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。
  13. Because that complex phenomena in pegs involve kinetic effects of plasma and cathode emitted electrons, and evolution of electromagnetic fields, particle - in - cell ( pic ) code is chosen as study tool, and a two and half dimensional cylindrical fully electromagnetic pic code cylinder2 - 1 / 2d, which is suitable for simulating the operation of the pegs, has been established

    考慮到peos物理現象涉及到等離子體和陰極發射電子的動力學行為以及空間電磁場的復雜變化，我們採用粒子模擬方法作為研究工具，研製了適用於peos物理問題模擬研究的二維柱坐標全電磁粒子模擬程序cylinder2 - 1 2d 。
  14. With the development of the converter drive technology, the requirement for the variable frequency drive are becoming more and more strict especially for the modern converter drive employing fast switching semiconductor igbt ， though it has high pulse frequency and refreshing time of only nanoseconds, it generates emf that has adverse effect on the environment

    隨著頻率控制傳動技術的發展，對頻率變速傳動系統的要求越來越高，尤其是對採用快速切換的igbt半導體現代變頻技術，盡管脈沖頻率高或更斷時間僅毫微秒內，但它們會對周圍環境產生電磁場。
  15. In time periods shorter than a century, the most striking influences caused by the sun are associated with its magnetic activities such as flares and prominence

    在一個世紀或以內的短時間內，太陽對地球的影響主要來自耀斑和日珥等太陽活動所造成的磁場變化。
  16. The core - mantle boundary is the closest researchers can get to the much more intense and complicated magnetic field that exists within the core, where magnetic fluctuations actually originate ; strong electric currents in the core prevent direct measurements of the magnetic field there

    地核內具有更為劇烈、復雜的磁場，而且也是磁場變動的真正發源處，但是研究人員可推算的極限是在地核?地函交界處；因為地核內的電流極強，因此無法直接測量內部的磁場。
  17. Based on the self - consistent nonlinear theory of complex cavity gyrotron with gradual transition, a simulation code of self - consistent nonlinear beam - wave interaction has been made, in which the multiple modes interaction with an electron beam and the mode coupling are taken into account. the interaction between the electron beam and hsn - h521 rf field for third - harmonic gyrotron is simulated. the influences of the thickness and the velocity spread and the velocity ratio of the electron beam and the fluctuation of the magnetic field and the technologic errors of complex cavity on the multi - modes interaction with an electron beam are analyzed

    二、在漸變復合腔迴旋管多模自洽非線性理論的基礎上，編制了高次諧波漸變復合腔迴旋管多模注?波互作用自洽非線性模擬軟體，並對8mm波段三次諧波漸變結構復合腔迴旋管的注? ?波互作用進行了大量的自洽非線性數值模擬計算與研究，進而分析了電子注的厚度、速度零散、速度比值、磁場波動、腔體尺寸的加工誤差等等多種因素對互作用效率的影響。
  18. 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。
  19. The basic principle of the method is that, when the micro drug delivering device mounted with a permanent magnet pass through the alimentary canal, the variety of magnetic field was detected by hall sensors, so the location of micro drug delivering device could be deduced and dynamic tracing can be achieved

    其基本過程是在微型藥物釋放裝置上固定永磁體，當其通過消化道時在體外檢測磁場變化，進而實時計算出微型藥物釋放裝置的空間位置，並描記出運動軌跡，實現動態跟蹤。
  20. Studies on the disturbance variations of geomagnetic field at so - se, near shanghai, china

    關于佘山地磁場擾動變化的分析
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