表觀擴散常數 的英文怎麼說

中文拼音 [biǎoguānkuòsǎnchángshǔ]
表觀擴散常數 英文
apparent diffusion constant
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 觀 : 觀名詞1. （道教的廟宇） taoist temple2. （姓氏） a surname
  • 擴 : 動詞（擴大） expand; enlarge; extend
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. Apparent diffusion constant

    表觀擴散常數
  2. 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
  3. Solar radiation models of different temporal and spatial scales were established by using ground observed data from meteorological stations. a series of distributed models were developed based on principles of direct and diffuse radiation on tilted surfaces and integrated with gis software. using dem data of chongqing, the distributions of direct and diffuse radiation over rugged terrains were simulated

    本文利用重慶及其周邊地區的日射站和常規氣象站水平面觀測資料，建立不同時空尺度的太陽輻射估算模型；依據坡地直接輻射和散射輻射機理，以地理信息系統為數據處理平臺，建立起伏地形下太陽輻射分散式估算模型；根據重慶1 ： 25萬dem數據，對重慶實際復雜地形下太陽直接輻射和散射輻射進行了數值模擬，為起伏地形下輻射估算及其他地表氣象要素的空間擴展提供有益的嘗試。
  4. Firstly, allocation coefficient, diffusion coefficient and reactive extraction equilibrium constant were determined, as well the operation factors affecting these parameters

    （ 1 ）測定包括分配系數、水相擴散系數和表觀反應萃取平衡常數等基礎參數，並分析了各操作條件對它們的影響。
  5. The results showed that kp value increased with the increase of the initial concentration and ph value of the feed phase. the determined diffusion coefficient showed good agreement with the value that were calculated by the experiential equation given by castillo r. reactive extraction equilibrium constant kr increased with the increase of the initial concentration of the feed phase and the carrier concentration, while kr value increased slowly in the high initial concentration of the feed phase

    分配系數的研究結果表明，分配系數kp隨著料液苯酚濃度增大而增大，隨料液ph值增大而升高;採用多孔板法測定水相中苯酚的擴散系數，並將測定值與經驗公式估算值進行對比，結果表明，測定結果是可靠的;表觀反應萃取平衡常數kr隨著載體濃度升高而增大，隨著料液濃度的增加而增大，而在濃度較大時， kr增大趨勢變緩。
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