恆星周期 的英文怎麼說

中文拼音 [héngxīngzhōuqī]
恆星周期 英文
sidereal period
  • 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...
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 恆星 : [天文學] fixed star; star恆星大氣 stellar atmosphere; 恆星導航 star navigation; stellar guidance;...
  1. Cepheid variable stars are stars whose brightness changes at regular periods

    造父變星是一種光線按規律周期發生變化的恆星。
  2. We have to use some other methods to measure the luminosity or equivalently the absolute magnitude of the cepheid variable. since we can readily measure the apparent magnitude of a cepheid variable, to measure the luminosity means measuring the distance. we use some distance measurement methods, for example, parallax, to determine the relation

    要弄清這個關系，我們要知道不同造父變星的光度和光變周期數據，量度光變周期當然不是問題，但要得知一顆恆星的光度，我們首先要得知它的距離，這時便須藉助好像視差法等其他量度天體距離的方法。
  3. Pulsating variables vary periodically, but for some stars, there may be sudden changes in their brightness. such kinds of stars are called eruptive variables. they include

    ：脈動變星的光度會周期性地改變，但有一些恆星的光度會在毫無先兆下變得光芒萬丈，這種恆星包括新星和超新星皆統稱為爆發變星。
  4. "stars: their birth, life, and death" is the result of a lifetime of work in the solar realm, embracing the full solar cycle but evincing none of the alleged deficiencies of composition at solar minimum.

    《恆星的誕生、發展和死亡》一書是著者在恆星領域里工作一生的結果，經歷了太陽活動周期的所有相位，然而卻絲毫看不出所謂在太陽活動極小期缺乏特色的跡象。
  5. 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
  6. Jupiter has a sidereal period ( its movement with respect to the " fixed " stars ) of 11 years, 314 days, and 839 minutes, so in nearly 12 years it is back into conjunction with those stars from which it began its orbit

    木星有一個恆星周期（它的移動與「固定的」星星相關） ，是11年零314天839分，因此從它的軌道開始，差不多12年的時間，回到了與那些星星關聯的位置上。
  7. From the distribution of rotation period and convection parameter of m type stars, stellar chromospheric activity of m type stars depart from the anticipation of a. dynamo theory obviously

    從m型主序星的自轉周期的和恆星內部對流區隨色指數的分佈來看， m型主序星的色球活動行為與發電機理論的預期有明顯的差異。
  8. The relation between stellar chromospheric activity and rotation of evolution stars have a good relativity. but meticulous analysis show chromospheric activity of evolution stars depend on stellar spectral type and effective temperature strongly. we provide several possible explain for those phenomena

    但是細致分析顯示演化恆星色球活動水平隨恆星自轉周期間的分佈對恆星光譜型和恆星表面有效溫度有很強的依賴，並對這些現象提出了幾種可能的解釋。
  9. Though this departure is not obvious, the result still support the conclusion in the analysis of stellar chromospheric activity. for evolution stars, wo do n ' t, obtain significative result because the deficient samples. but the statistics analysis show the distrbution of corona activity of late type with color index and rotation period exist upper limit

    演化恆星的磁冕球活動在色指數和自轉周期的分佈上都顯示出冕球磁活動存在上限的現象，並且對冕球磁活動上限的擬合表明在色指數b一v為1 . 0附近和自轉周期
  10. For a - early f type ms stars, stellar chromospheric activity decrease with stellar rotation period, but increase with rossby number ; for m type ms stars, stellar chromospheric activity increase with stellar rotation period and rossby number, and stellar chromospheric activity reach saturation at large color index ; for the ms stars between mid - f to m type, stellar chromospheric activity decrease with stellar rotation period and rossby number

    A ?早f型主序恆星的自轉周期和恆星對流區的隨色指數的分佈明顯地影響著這些恆星的色球活動行為。而m型主序星的色球活動水平基本上隨自轉參量的增大呈上升趨勢，並且m型主序星的色球活動水平在色指數較大時趨于飽和。
  11. Cynosural system jammers prevent the formation of new cynosural fields in the system, and force existing fields to collapse at the end of their cycle

    誘導系統擾斷器阻止恆星系統內新誘導力場的產生，並且強制關閉當時已經存在的力場（當然是周期結束后） [赫拉：意為一旦結束無法再度開啟] 。
  12. Moreover, the effects of sampling period, star sensor precision, and number of sighting stars on determining orbit precision are analyzed and compared

    還分析比較了采樣周期、星敏感器精度、恆星數目等因素對定軌精度的影響。
  13. Several explanations have been proposed, including cycles of magnetic activity somewhat similar to our own sun ' s sunspot cycle, the action of companion stars orbiting around the dying star, and stellar pulsations

    現在有幾個被提出的解釋，包括像我們自己的太陽黑子周期的磁場周期活動，圍繞衰老的恆星軌道有規律運動的伴星。
  14. For the evolution stars with age less than 109 years, stellar magnetic activity and rotational period decrease with stellar age ; for the stars with age larger

    而晚型演化恆星不論是演化恆星的磁活動還是自轉周期以恆星年齡10 」年為分界點表現出隨年齡不同的規律。
  15. There have good linear relativity between stellar magnetic activity, rotational period and stellar age of ms stars, but this relativity of evolution stars has different action

    在第七章中，我們討論了晚型恆星的自轉周期的分佈、恆星年齡對晚型恆星磁活動的影響以及晚型恆星的角動量演化。
  16. There are many star gates leading to the boundary of the great central sun to enter in the coming 18 - year cycle

    眾多恆星門（將把地球）領向大中樞太陽的區界，並進入即將到來的18年周期。
  17. Finally, as laurence a. marschall reports in planetary prospecting, a clever program to hunt for periodic changes in the spectra of stars has confirmed the existence of numerous giant planets orbiting stars beyond our solar system

    最後，正如勞倫斯?瑪舍爾在《行星勘探卜書中所說，一個搜尋恆星光譜周期變化的聰明計劃證實在太陽系之外有無數個大行星圍繞著恆星在做軌道運行。
  18. Since the stellar rotation is taken into account, our model is located very near to the upper boundary of period - color diagram which is obtained from observations of w uma type systems

    由於考慮了恆星自轉，我們得到的理論模型在wuma型相接雙星的觀測周期-顏色圖上的位置非常接近觀測得到的上邊界。
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