測星盤 的英文怎麼說
中文拼音 [cèxīngpán]
測星盤
英文
astrolabe-
Spinning damsel and cowherd are the famous stars vega and altair respectively. in chinese mythology, they were tragic lovers separated by the milky way and could only meet once in a year
只要轉動星圖上的圓盤對準觀測時的日期和時間，圓盤內所顯示的就是香港當時可見到的星空。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。Dutch car dealer peter bijvelds said he had already found buyers for the 200 landwind five - door sports utility vehicles suvs and was confident of selling about 2, 000 of them this year. a car made by jiangling motors group is on display in the beijing international auto show in this picture taken on june 6, 2002
據悉，在國家經貿委近日網上發布的國家第98批光盤上，安凱車輛製造有限公司自主研發的hff6950k19和hff6122gk06兩款新車型順利通過國家檢測，取得國家目錄，這意味著這兩款新產品已經正式成為安凱車輛公司「星凱」家族兩員新丁。Even with the much closer venus, the observations were tricky ; it was crucial to know the exact geographic positions of the observing stations and to accurately time the four “ contacts ” between venus and the sun. ( the first and second contacts occur at ingress, when venus ' s disk touches the sun ' s from first the outside and then the inside ; the third and fourth contacts occur at egress. ) but the potential payoff from the observations would be enormous
即使是距離近得多的金星，這個測量也不容易；必須要知道觀測站確實的地理位置，且要能準確測定凌日時金星和太陽發生四次接觸的時間（第一和第二次接觸發生在初切，即金星的盤面由外然後再內接觸到太陽盤面；第三和第四次接觸發生於終切） 。Another expectation, which hubble overturned, was that the circumstellar disks would be deeply embedded within their parent clouds and would therefore be impossible to see
另外有一個被哈伯推翻的猜測，是因為環繞恆星的氣盤深藏在其母雲氣之中，所以無從窺其究竟。Sophisticated facilities installed on board range from radar, thermal imager, global positioning system ( gps ) to electronic chart and navigation equipment
健警警輪安裝了多種先進設備，包括雷達、熱能探測器、全球衛星定位系統，以及電子海圖和電羅盤等。Our yields increase with the mass of the progenitor main - sequence stars. massive stars ( i. e. 18m < m < 50m ) is the primary sites of the neclearsynthesis of the r - process and can explain the galaxy chemical evolution. 3. we present formula to calculat the r - process galactic chemical evolution of ba peak elements. this formula contains metallicity abundance and point out the relation of the ba peak elements and disscuss the effect of various mass supersnova. besides, our formula can be confirmed by a lot of observations
由此可以解釋以下觀測事實: （ l ） mg ， eu均產生於snh星，但質量范圍不同，在高質量（ > 20 ） eu的產量高， mg的產量（相對于太陽） ，導致暈星中eu / mg > 0 ，而產生mg的質量范圍較大，致使在厚盤的晚期較小質量超新星也開始對mg有貢獻，而這些星對eu的貢獻很小，致使在厚盤星中eu / mg < 0 ，在厚盤中eu / fe隨金屬豐度的升高而降低，仁mg / fe隨金屬豐度的升高而不變In chinese mythology, they were tragic lovers separated by the milky way and could only meet once in a year
只要轉動星圖上的圓盤對準觀測時的日期和時間，圓盤內所顯示的就是香港當時可見到的星空。Accretion disks formed when compact objects suck in matters of companion stars may also betray the existence of black holes
另一個重要的觀測對象是緻密天體因為吸食伴星物質而形成的吸積盤。Black holes are invisible by definition, yet the gas and dust falling into a black hole are heated to high temperatures and glow furiously. if there is a companion star orbiting around a black hole, astronomers can investigate the central black hole by examining the accreting matters from the nearby companion star
顧名思義，黑洞漆黑一片，目不可見，但其實那些墮入黑洞的氣體和塵埃，會因受熱而發出熾烈的光芒，因此假如黑洞有伴星的話，天文學家便可透過觀測伴星物質流入黑洞時所形成的吸積盤，對中心的吞噬者進行研究。分享友人