磁變星 的英文怎麼說

中文拼音 [biànxīng]
磁變星 英文
magnetic variable star
  • : 名詞1. [物理學] (磁性; 能吸引鐵、鎳等的性質) magnetism 2. (瓷) porcelain; china
  • : 名詞1 (夜晚天空中閃爍發光的天體) star 2 [天文學] (宇宙間能發射光或反射光的天體) heavenly body...
  1. 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(如木衛三,水,地球,木和土)和恆(如太陽)具有內部場.對這些場的存在和化的解釋對行科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行和恆的導電流體內部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流體力學過程產生並維持在行和恆中的場.在行流體力學過程強烈地受到轉動,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
  2. The spin - down rate has been measured for almost every radio pulsar, and theory indicates that it depends on the strength of the star ' s magnetic field

    這種自轉慢的速率,幾乎每一顆無線電波霎都量得到,而理論指出,此速率和體的場強度有關。
  3. 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

    如果在新生中子里的流體,也把10 %的動能轉場的話,場強度會上漲到超過1015高斯,這是大多數無線電波霎所帶場強度的1000倍以上。
  4. Value, and the current density and intensity versus the substorm phases. moreover, the characteristics of substorm current wedge are given special attention. it is found that the density and intensity of facs reach their peak during the expansion phase, the onset of the expansion phase is triggered when imf is changed to southward from northward or the southward imf decreases, and the positions of onset are most likely to be at the edge of plasma sheet near the earth

    值分佈以及場向電流強度和密度隨亞暴位相的化,並著重分析了亞暴電流楔的特徵。結果表明,亞暴膨脹相的場向電流強度和密度都達到極大值亞暴的膨脹相是由行場轉向或南向分量小觸發的,其起始位置很可能位於近地等離子體片內邊緣。
  5. Magnetic cataclysmic variable

  6. According to the direction and damping characteristic of the torque produced by the magnetorquers, the three axis attitude control schemes of gravity gradient satellite and other satellite with damper is presented. the control coefficients are determined by the dynamic characteristics of geomagnetic intensity, so the attitude control precision is improved

    根據力矩在地場中的定向阻尼特性,提出了控重力梯度衛和攜帶阻尼器的非重力梯度姿態控制規律,根據地場強度化規律選擇控制系數,提高衛的姿態控制精度。
  7. Deltan heliographers observe an irregularity in the magnetic cycle of the star delta. the shift of the stars magnetic polarity which usually occurs every 12 years has occurred 1 year early

    德爾塔日光儀觀察到球德爾塔的極周期不規則性化;該球每12年移動一次的化剛剛在一年前發生過。
  8. For an actual planetwide polarity reversal to occur, such a reversed flux patch would grow and engulf the entire polar region ; at the same time, a similar change in overall regional magnetic polarity would take place near the other geographic pole

    如果整個行極要真的反轉,反向通量斑塊需擴大到涵蓋整個極區;同時,另一個地理極點附近也會發生類似的區域極性全面化。
  9. The magnetic lines of force are in effect glued to the interstellar gas, and they follow the clouds in their capricious motions.

    力線實際上是緊附在際氣體上,並跟隨際雲一道作著化莫測的運動。
  10. Based on the viewpoint of interaction between waves in plasmas, the partial differential equation that causes the spectral lines broadening has been deduced from radiation transfer equation of high - frequency electromagnetic waves in plasmas. the numerical solution has been obtained by using the fortran program we compiled. we concretely calculated the spectral lines widths of and fraunhoferx 3704 in corona, fj / a4923. 9 in dwarf nova oy car and f. / a4934 in the variable star rr lyrae

    本文從等離子體波與波相互作用觀點出發,由高頻電波輻射轉移方程導出了引起譜線寬度化的偏微分方程,編寫fortran程序求解偏微分方程的數值解,具體計算了日冕綠線f _ exiv 5303和夫朗禾費線3704 、矮新oycarf _ eii 4923 . 9 、天琴rr型f _ ei 4934的譜線加寬值,對以上各譜線加寬中的等離子體致寬效應作了初步計算。
  11. This is where a magnetic field changes shape and bumps into itself

    這就是場改了形狀然後向本身內部撞擊。
  12. Therefore soon after their supernova birth, their rotational speed will become so low that they stop to emit electromagnetic pulses

    因此,超新爆發后不久,的自轉速度會得非常緩慢,因而停止發放電脈沖。
  13. The science objectives involve high resolution imaging of the surface, studies of the topography and gravity, the role of water and dust on the surface and in the atmosphere of mars, the weather and climate of mars, the composition of the surface and atmosphere, and the existence and evolution of the martian magnetic field

    此次發射的目標包括拍攝高解析度的火表面圖片、研究火地形和重力、水的狀態、地表和空氣中的塵埃、火的氣候和天氣、土地和空氣的構成和火場的存在和演
  14. Increased radiation from the sun and occurrence of geomagnetic storms i. e. severe distortion of geomagnetic field of the earth may cause disturbances such as increases in density in the earth s upper atmosphere. these result in a greater drag on the movement of satellites and spacecraft, causing a slow - down or even a change in orbit

    輻射的增加及地暴即地球場急速形的出現,會導致地球上層大氣的擾動,例如空氣密度的上升,從而使衛和太空船在航行時受到的阻力大增,航行速度因而減慢,甚至軌道亦會改
  15. Increased radiation from the sun and occurrence of geomagnetic storms ( i. e. severe distortion of geomagnetic field of the earth ) may cause disturbances such as increases in density in the earth s upper atmosphere. these result in a greater drag on the movement of satellites and spacecraft, causing a slow - down or even a change in orbit

    輻射的增加及地暴(即地球場急速形)的出現,會導致地球上層大氣的擾動,例如空氣密度的上升,從而使衛和太空船在航行時受到的阻力大增,航行速度因而減慢,甚至軌道亦會改
  16. Combined with the observational properties, we have constructed a theoretical model of a contact binary with a total mass of 1. 8 mo. our initial model is a detached binary in which the primary is very close to its roche lobe

    並且由周期化時標得到滯效應可能是引起wuma型相接雙的角動量損失的主要物理機制。結合wuma型相接雙的觀測特性,我們建立了一個總質量為1 . 8m 。
  17. Earlier this year gauthier hulot of the paris geophysical institute and his colleagues used satellite measurements to track changes in the field ' s behavior near the top of the core

    今年( 2002 )年初,法國巴黎地球物理研究院的余洛和他的同事,利用衛測量來追蹤接近地核表層的偶極場的化。
  18. Pole shifts are a cataclysmic inversion of the planet ' s axis of rotation, up to 180 degrees ; a sudden slippage of the planet ' s solid crust around the molten core

    極轉換是行旋轉軸的大動倒置,等於180度翻轉;在熔化的地核周圍行固體外殼突然意外的滑移。
  19. Through the analysis of the attitude dynamic equation, the potential energy function is derived. the relationships of attitude varieties are derived from energy function and angle momentum equation and thus the attitude control laws of bias momentum satellite are put forward

    通過對衛姿態動力學方程分析,得出衛的勢函數,結合衛的勢函數和角動量方程導出各姿態之間化關系,提出利用地場實現偏置動量輪衛姿態穩定的控制規律。
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