近軌道速度 的英文怎麼說

中文拼音 [jìnguǐdàosùdù]
近軌道速度 英文
near-orbital speed
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 軌 : Ⅰ名詞1. （路軌;軌道） rail; track 2. （比喻辦法、規矩、秩序等） rut; path; course Ⅱ動詞[書面語] （遵循; 依循） follow
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 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
  • 軌道 : 1 （供火車、電車等行駛的由條形鋼材鋪成的路線） track; pathway; rail; runway; circle; railway 2 （...
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. As an effective traffic of light rail transit, it has been widely adopted by many large cities over the vorld, and a few cities of china are planning or building the light rail transit in our country, which has characteristic of saving investment, short construction period, high flexibility and low life - cycle costs for the light rail transit which can be constructed underground or high frame in crucial area, which can be suitable for the requirements of large capacity, high speed, safety and punctuality

    輕軌交通便是其中一種有效的交通方式，近幾年來在世界上各國大城市得到迅速發展，我國也有十幾座城市計劃或正在建設輕軌交通。其具有投資少、建設周期短、靈活性強、運行成本低的特點，可在關鍵地段和市中心區採用高架或地下鐵道結構，使其能運量大、速度快、安全、準點。
  2. The body travels in an ellipse, the fixed point being at on focus. the speed is greatest when body is near the focus, less when it is farther away

    物體沿著固定點在一個焦點上的橢圓軌道運動。當運動物體靠近這一焦點時其速度最大，而當它遠離時則速度變小。
  3. Recently, train is running faster and faster, and considering the stability and security, seamless welded rails ( swr ) are used as the train orbits gradually. the temperature of the rails will vary with weather. so that the rails may release the energy due to the metal characteristic of expanding or contracting with temperature, there is some badly distortion in the swr, worsly occurring accidents on expanding orbits. the portrait thermal stress ( pts ) of the swr should be monitored in some parts regularly, as to avoid such accident

    近年來，隨著火車的提速造成的穩定和安全問題，軌道逐步轉為採用無縫焊接鋼軌，隨著鋼軌溫度的變化，無縫鋼軌可能會因為熱脹或冷縮的金屬特性並且在扣件阻力小而且路基較差的路段釋放能量，可能會發生鋼軌嚴重變形，更甚者會發生脹軌跑道等嚴重鐵道事故，為了避免發生如此事故，有必要定期對鋼軌的溫度應力進行檢測。
  4. In order to predict the arrival time at 1au of interplanetary shocks, a simple model called disturbance model is established here. in this model, the travel time is assumed to be a function of energy that is released from solar explosives, and input pulse longitudinal width, input pulse duration, the interaction of interplanetary shock and background solar wind are also taken into account

    本論文考慮了激波爆發源角寬度、能量、驅動時間、激波速度及其與背景太陽風之間的相互作用，利用流體力學擾動方程建立起一個激波擾動傳播模型，用於研究激波從太陽傳播到地球軌道附近（ 1au處）所需要的時間問題。
  5. Result shows : the vibration of vehicle is mainly relevant to velocity and uneven path. the higher the velocity is, the more uneven the path is, the more violent the vibration of vehicle is ; comparing dynamical response of middle bridge stride on vehicle passing bridge and on equivalent moving loads, the displacement is same but the velocity and the acceleration are different ; the result of velocity and acceleration of vehicle is big over the ground path than over the same path of bridge

    結果表明：車輛的振動主要和車速及軌道不平順有關，車速越高，軌道越不平順，車輛振動的就越劇烈；車過橋時橋梁跨中動力響應與等效移動荷載作用下橋梁跨中動力響應比較，橋梁跨中的位移基本相近，速度和加速度則不同，等效移動荷載作用情況下的數值比較大；車輛過地面軌道不平順時的速度、加速度比車輛過橋上同樣軌道不平順時的數值大。
  6. Comparing with the current observations, which include the number density distribution in space, mass function, etc., the so - called standard modes for both the power law and gaussian cluster initial mass functions are selected among many runs of simulations. the deviation from the standard modes, which is resulted from the change of the parameter for the initial conditions, is discussed in detail. the discussion of the model parameters is also presented although they are adopted as the typical values based on previous work

    對應一定的初始分佈我們發現無論是冪律的還是對數高斯的球狀星團初始質量譜經過長時間的動力學演化都會得到和現在銀河系觀測到的球狀星團系統相符的對數高斯的質量分佈；動力學演化會明顯地改變球狀星團系統的空間密度分佈，靠近銀心區域的球狀星團瓦解得更多；經過動力學演化后的球狀星團速度分佈函數在靠近銀心的區域明顯得不同於初始分佈，初始擁有較大軌道偏心率的球狀星團更容易瓦解。
  7. An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process

    飛行器軌道機動過程中，為跟蹤、定位機動目標和干預機動控制過程，需要統計處理離散的雷達觀測量實時估計推進發動機的推力，進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型，推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量，應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力
  8. The major research of this paper is that : 1, it is analyze the displacement response of the elastic - foundation beam by the static loads and the moving loads, the dynamic response of winkler beam, analyze the influence of the sleeper in the dynamic response of the rail system. and compare the result with the experiment formulation. it is concluded that the continuous model only fit for the lower moving velocity of loads

    本文主要進行了以下幾方面的研究： 1 、首先對靜力荷載作用下彈性地基梁的位移反應、文克爾梁模型的動力響應，及枕木在軌道系統動力響應中的作用進行了分析，並與傳統採用的經驗公式進行對比，以此分析了連續性模型只適用於荷載移動速度較低的情況下，在速度較高的情況下，特別是接近臨界速度時，連續性模型是無效的。
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