退行速度 的英文怎麼說

中文拼音 [tuìhángsùdù]
退行速度 英文
recessional velocity
  • 退 : 動詞1 （向後移動） retreat; draw back; move back 2 （使向後移動） cause to move back; remove; wit...
  • 行 : 行Ⅰ名詞1 （行列） line; row 2 （排行） seniority among brothers and sisters:你行幾? 我行三。where...
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 退行 : back line feed
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. From the extent of the red shifts the recession velocities can be computed.

    從紅移量可以計算退行速度。
  2. 513km s mpc, ie, for a celestial object 1, 000, 000 parsec away from us, its recession rate is 513km 1 parsec 3. 26 light years

    513 km s mpc ，即一個距離我們一百萬秒差距的天體，它的退行速度是每秒513公里一秒差距3 . 26光年。
  3. Basically like “ adaptive approach ”, the method can control triangulation density with respect to the change of normal curvature of the surface generating a small number of triangular facets, and thiny triangles, degenerate triangles and “ cracks ” in 3d space will not occur, but the speed of the algorithm is higher than that of adaptive one

    該方法基本上可以像「自適應」方法一樣，根據曲面的法曲率變化來控制三角化剖分的密度，生成的三角片數量較少，並且可以避免在三維空間產生狹長的三角形、退化三角形與「裂縫」 ，運行速度明顯比自適應方法快。
  4. According to structural characteristics of multi - phased alloy steels and the properties of ultrasonic propagation, microstructures characterization with different heat treatment processes ( normalizing, quenching / annealing, quenching plus low tempering, quenching plus high tempering ) for three steels ( 40cr, 38crmoal, gcrlssimn ) was studied experimentally by using ultrasonic methods. ultrasonic velocity, relative attenuation coefficient, and power spectral analyses were researched on the same samples respectively, on the basis of theory and experiment, the sensitivity and other characterizations of the three methods used to distinguish different microstructures were compared

    根據具有多種相結構合金鋼不同熱處理轉變產物的組織特點，以及超聲波在其中的傳播規律，利用超聲波速度、相對衰減系數以及功率譜分析三種方法，對三種鋼（ 40cr 、 38crmoal及gcr15simn ）不同熱處理（正火、淬火退火、淬火+低溫回火及淬火+高溫回火）轉變產物的顯微組織進行了超聲表徵研究。
  5. Under the assumptions of non - convexity and non - degeneration, it is proved that the solutions of the initial - boundary problem to this viscoelastic model tend towards the travelling wave solution of the corresponding cauchy problem time - asymptotically for zero boundary speed and small initial perturbation by a weighted energy method

    對粘彈性模型，用權能量方法證明了在非凸非退化的情形下，當邊界速度為0 ，初始值具有小擾動時，具初邊值問題的解收斂于相應的柯西問題的行波解。
  6. Prepared technical parameters were optimized by l9 ( 34 ) experiment analysis. a unique method for cleaning and drying of substrate - cleaning used by scour, drying used by infrared light was fished out by large numbers of experiment. chemical mechnism of zno thin film prepared by sol - gel technique was discussed by dta for the first time. by the measurements of sem, xrd and uvs, the thin film was analysed. the result proved that the thin film with strongly preferred orientation of c - axis perpendicular to the substrate surface which surface was homogenous, dense and crackfree was the crystalline phase of hexagonal wurtzite. the thin film was composed of plentiful asteroidal crystal which crystal dimension approximately 10 30nm. the average transmittance of thin film in visible region was above 90 %. the results of measurements else also proved that the thickness of single dip - coating was 75 240nm, this films resistivity was found to be 3. 105 102 3. 96 105 ? cm. the thickness and resistivity of thin film influenced by dope - content, withdrawal speed, pre - heat - treatment, anealing were reseached respectively

    利用xrd 、 sem以及uvs光譜儀等分析方法對薄膜進行了研究，結果顯示，所制備的薄膜為六方纖鋅礦型結構，具有高c軸擇優取向性；表面均勻、緻密，薄膜材料由許多星狀晶粒組成，晶粒尺寸大約為10 - 30nm左右；薄膜可見光透過率平均可達90 % ；對薄膜厚度以及電學性能進行了測定后發現：單次鍍膜厚度約為75 - 240nm ， al ~ （ 3 + ）離子摻雜型氧化鋅薄膜的電阻率在3 . 015 102 - 3 . 96 103 ? cm范圍內；分別研究了摻雜濃度、提拉速度、預燒溫度、退火溫度等工藝參數對薄膜厚度和電阻率的影響。
  7. The relationship between sputtering conditions and the depositional speed shows : with working pressure 1. 2 pa, sputtering power 180w, the depositional speed of tio2 thin film is 40nm / h, and increases with the increasing of sputtering power. it can be also founded that the depositional speed is nearly proportional to the working pressure : within the range of 0. 3pa to 1. 6pa, the depositional speed increases linearly with the increase of ar pressure. with the enhancement of the substrate ' s temperature of sputtering or annealing, the resulted thin films show a tendency of decreasing in thickness, and increasing in refractivity

    本實驗是採用磁控濺射方法，在不同的溫度下制備了tio _ 2薄膜，並對薄膜進行了不同溫度和時間的退火處理，通過原子力顯微鏡（ afm ） 、 x射線衍射（ xrd ） 、掃描電鏡（ sem ）等檢測手段對薄膜的表面形貌和組成結構進行了分析，結果如下： （ 1 ）濺射工藝條件與薄膜沉積速度的關系表明：採用1 . 2pa工作氣壓， 180w的射頻功率tio _ 2薄膜的沉積速率為40nm h ，並隨射頻功率的增加而提高，呈近似的線性關系，在0 . 3pa 1 . 6pa氣壓范圍中，氬氣壓強升高沉積速率迅速增加，濺射溫度提高和退火處理能使薄膜的厚度減小和折射率提高。
  8. Abstract : simulated annealing and multigroup parallel evolution are two helpful methods which can improve the performance of genetic algorithm. these two ideas are well combined in this paper, and a new algorithm is derived, that is the multigroup parallel genetic algorithm based on simulated annealing method. simulation results show that this method not only quickens the computation, but also improves the convergence efficiency, thus produces more satisfactory results

    文摘:模擬退火和多種群并行遺傳進化是兩種較好的改進遺傳演算法性能的方法.將這兩種思想有機地結合起來，提出了一種基於模擬退火機制的多種群并行遺傳演算法.模擬結果表明，該演算法不僅能增強演算法的全局收斂性，還能加快遺傳進化速度，得到滿意的全局最優值
  9. Astronomers estimate the speed at which a galaxy is moving away by measuring the galaxy ' s redshift

    天文學家通過測量星系的紅移對其退行的速度進行估算。
  10. Continuing the above example, the galaxy is moving at a speed of about 9000km s away from us, given the speed of light is 3x10

    把數值代入，便可以得出以上例子的星系退行速度為每秒九千公里。
  11. American astronomer edwin hubble in 1929 discovered that the recession rate of galaxies was directly proportional to their distance. this is what we call the hubble s law which defines that v h

    美國天文學家哈勃於1929年發現星系退行速度與其距離存在著正比的關系，即所謂哈勃定律：退行速度v h
  12. The degradation and lifetime model is deeply discussed, dynamic and static stress suffered by devices and circuits are compared and analyzed. a modified model for lc is proposed for better fitting the experimental data and the substrate current model parameters eerit and lc, degradation parameter h, m, n are extracted by the static stress experiment results

    詳細分析討論了mosfet的壽命與退化模型，並對電路中器件所受的動態應力與直流靜態電應力進行了分析比較：根據實驗結果改進了有效導電長度l _ c模型；應用直流電應力實驗數據進行了襯底電流模型中載流子速度飽和電子科技大學博士論文臨界電場e ； 、有效導電長度lc以及退化參數h 、 m和n的提取。
  13. From hubble s law, we know that measurement of recession rate of celestial objects mostly clusters of galaxies and distances are the pre - requisites for the search of h

    ，先要測量出天體主要是星系團的退行速度和距離。哈勃本人在1929年給出第一個數值： h
  14. The french, after crossing the river, had, as the spy reported, set off at a quick march toward znaim, which lay on kutuzovs line of routes more than a hundred versts in front of him

    偵察兵稟告，法國人越過維也納大橋，正以強行軍的速度向庫圖佐夫撤退的道路上的茨奈姆推進，在庫圖佐夫前頭走了一百多俄里。
  15. Milling, turning, planning of cast iron, annealed cast iron, steel, austenitic steel. medium cutting speed and chip cross - sections. for interrupted cutting and varying cutting depths. high toughness and impact strength

    對鑄鐵、退火鑄鐵、鋼鐵、奧氏體鐵進行銑削、車削、刨平加工的牌號。適合中等切削速度、中等切削截面的切削加工。適合不同切削深度和間斷性切割。抗沖擊強度高、韌性高。
  16. While maintaining constant altitude and speed, execute a 360 degree turn in the opposit direction, the helicopter should flying directly at the pilot again

    保持固定的高度及速度，向另一側執行360水平圓，此時機尾又朝向操控者後退飛行。
  17. If the redshift is much less than 1, we can calculate the receding velocity by the following formula

    若紅移z比1少得多則我們便可用以下公式找出星系的退行速度v ：
  18. We know how fast the galaxies are receding from us. so, if we run the movie of the universe backward, we can calculate how long it takes for the galaxies to get back together. from this, the age of the universe is about 15 billion years 1. 5 x 10

    利用大爆炸理論亦可以估算宇宙的年，由於我們知道星系的退行速度，只要我們來一個倒鏡，計算所有星系回到原點所需的時間，便可得出宇宙的年，結果是大約有150億年1 . 5x10
  19. M s. if the motions of the galaxies were random, then we would expect that about half of them will recede from us while half of them will be approaching us. however, hubble found that not only most of them are receding from us, but also the receding velocity is directly proportional to the distance away from us

    假若星系運動的方向是隨機的，那麼應該有一半的星系正在遠離我們，另一半則接近我們，但結果實在出人意表，哈勃發現不單絕大部分星系正在遠離我們，而且它們的退行速度和與地球的距離成正比，這個關系可以下式表示：
  20. There are two major errors. the first one is the error occurred in measuring v. although astronomers can locate v of individual galaxy accurately through the spectrum and the doppler s effect, owing to the gravitational pull exerted from neighbouring galaxies and clusters of galaxies, v is not wholly determined by the expansion of the universe

    有兩個主要的誤差：第一個是測量退行速度的誤差，雖然天文學家利用光譜及多普勒效應，已經很準確地找到個別星系的退行速度，但由於與鄰近星系及星系團的引力作用，這個退行速度便不完全是因宇宙膨
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