恆星演化 的英文怎麼說

中文拼音 [héngxīngyǎnhuà]
恆星演化 英文
evolution of stars
  • 恆 : Ⅰ形容詞1 （永久; 持久） permanent; lasting 2 （平常; 經常） usual; common; constant Ⅱ名詞1 （恆心...
  • 星 : 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...
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 恆星 : [天文學] fixed star; star恆星大氣 stellar atmosphere; 恆星導航 star navigation; stellar guidance;...
  • 演化 : evolution
  1. Carbon stars with c / o > 1 are a kind of stars that form at the agb stage and evolved from oxygen - rich agb stars with mid - mass

    碳星是中等質量星演化到agb階段時可能形成的一種恆星，它由氧星演化而來， [ c o ] 1 。
  2. A quantitative analysis of this idea led to the prediction that a star remaining about three times the mass of the sun at the end of its evolution ( usually as a neutron star ), will almost inevitably shrink to the critical size needed to undergo a gravitational collapse

    該想法的定量分析導致預言一顆恆星在終止它演化時候保持大約三倍太陽的質量（通常看做一顆中子星） ，將會幾乎不可避免收縮到臨界體積必須遭受引力坍塌。
  3. Evolution of stars of all masses takes place on a hydrodynamic time scale.

    各種質量的恆星的演化，均以流體力學的時間尺度進行。
  4. On the bases of the galaxy evolution theory, we use the therotical chemical evolution model of three zone ( such as halo, thick disk and thin isk ) and multi - phase ( diffuse gas, molecular clouds, stars of both low and high mass, the remnants ). by comparing with the observational constraints, such assurface densities, age - metallicity relation, g - dwarf metallicity distribution in the solar neighbourhood and the correlation between [ a / fe ] and [ fe / h ], supernovae rates, infall rates. the rationality of the model is verified. based on the theory model, we calculate the abundance of neutron capture element

    本文正是在銀河系化學演化的基礎上，利用銀河系的三成分（ threezone ） （即暈、厚盤和薄盤）多相（ multi - phase ） （氣體，分子云，大、小質量恆星以及剩餘物質）的化學演化的理論模型，通過與觀測約束（質量面密度、場星的年齡-金屬豐度關系、太陽附近g矮星金屬含量分佈函數、三成份的特徵量、元素的星系化學演化、超新星的爆炸率、內落速率等）的比較，來檢驗模型的合理性。
  5. Third, it is important to derive from the observations irrefutable evidence that the earliest phases in the evolution of protostars do occur.

    第三個重要任務是要由觀測得到不可辯駁的證據來證明原恆星演化中的一些最早期現象確實能發生。
  6. 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
  7. Two also lie near very dense clusters of massive young stars, intimating that sgrs tend to form from such stars

    其中兩顆還與由大質量的年輕恆星所組成的緻密星團距離很近，這表示sgr可能是由這類星體所演化而來的。
  8. Topics include : planets, planet formation ; stars, the sun, " normal " stars, star formation ; stellar evolution, supernovae, compact objects ( white dwarfs, neutron stars, and black holes ), plusars, binary x - ray sources ; star clusters, globular and open clusters ; interstellar medium, gas, dust, magnetic fields, cosmic rays ; distance ladder ; galaxies, normal and active galaxies, jets ; gravitational lensing ; large scaling structure ; newtonian cosmology, dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis

    課程的主題包含了：行星、行星形成；恆星、太陽、正常的恆星、恆星形成；恆星演化、超新星、緻密天體（白矮星、中子星及黑洞） 、波霎、雙x -射線源；星團、球狀及疏散星團；星際介質、氣體、塵埃、磁場、宇宙射線；距離階梯；星系、正常及活躍星系、噴流；重力透鏡；大尺度結構；牛頓宇宙學、宇宙的動力膨脹及溫度發展歷史；宇宙背景微波輻射；大霹靂核合成。
  9. Between chromospheric activity index and corona activity index of ms stars, there exist good linear relativity. but for evolution stars, this relation show a large dispersion

    我們發現主序星的色球與冕球磁活動指數存在著很好的線性相關性，而演化恆星的則表現出較弱的相關性。
  10. Among the evolution is the chemical evolution of the galaxy showing its exceeding importance. the recognize to the galaxy chemical evolution build up the basement of understanding the whole galaxy evolution. and it can restrict and constrain the evolution and ncleosyhthesis of the stellar

    其中銀河系的化學演化在其中更是具有極其重要的地位，對銀河系化學演化的認識是理解整個銀河系演化的基礎，並對恆星演化與核合成理論提供約束。
  11. In this area, visitors can select videodisc programmes on stellar evolution and star systems. they can also visualize the spatial relationship between component stars of such famous celestial configurations as the orion and the big dipper

    觀眾可選看關于恆星演化和恆星系統的影碟節目，他們亦可看到著名的獵戶座和北斗七星內各星體之間的空間關系。
  12. This hourglass nebula is the closing phase of a sun - like star s life as its outer layers are ejected

    沙漏星雲是與太陽相似的恆星演化最後階段，恆星把外殼噴出，形成行星狀星雲。
  13. Within these tight knots of stars, observers in recent years have discovered bodies that are forbidden by the principles of ordinary stellar evolution ? but that are naturally explained as smashed - up stars

    在這些緊密的恆星集團內，觀測者近年已發現通常的恆星演化理論所不容許存在的恆星，於是很自然將它們解釋成撞擊而形成的恆星。
  14. An understanding of the stellar energy sources is still more vital for the problem of stellar evolution.

    弄清恆星的能源對恆星演化的研究是更為關鍵的問題。
  15. Frequent space museum visitors should know that neutron star is one of the possible final products of stellar evolution

    經常參觀太空館的人該知道，中子星是恆星演化至末期的結果之一。
  16. Is the most important diagram in discussing stellar evolution. it is a plot of the surface temperature versus the brightness or luminosity of stars

    是研究恆星演化最重要的工具，它顯示了恆星表面溫度和恆星光度的關系。
  17. The first is stellar - mass black holes, having a mass of a few solar masses as the name indicates. they are the end products of stellar evolution for very massive stars

    第一類稱為恆星質量黑洞，這類黑洞的質量與太陽質量的量級相若，它們都是巨大恆星演化后的最終物。
  18. Such a figure caused controversy. the stellar evolution theory states that the oldest globular cluster might have existed for 15 billion years. how could a star be older than the universe

    當時曾掀起一場爭論，因為從恆星演化理論得知，一些最老的球狀星團可能已有150億年的壽命，怎可能星體比宇宙更年老？
  19. Nature of the universe - chapter eighteen after studying the evolution of stars, we discuss objects much bigger : galaxies

    在討論過恆星演化之後，我們會討論一些更大的天體星系。
  20. The discovery of isolated black holes agrees with the stellar evolution theory that black hole can be formed naturally when a massive star collapses under its own gravitation. binary system is not a necessary for its formation

    黑洞可以孤立地存在，暗示著黑洞並不一定需要存在於雙星系統，而可以透過孤立的大型恆星的重力塌縮而產生，這正是一直以來恆星演化理論所預期的結果。
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