趨近速度 的英文怎麼說

中文拼音 [qūjìnsùdù]
趨近速度 英文
velocity of approach
  • 趨 : 動詞1. （快走） hasten; hurry along 2. （向某個方向發展; 趨向） tend towards; tend to become
  • 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...
  • 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
  • 趨近 : approach motive
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. In this paper a kind of cardio - cerebral arterial bifurcation vessel hemodynamic characteristics are studied with the boundary element method, and the blood flowing velocity vector distributions have been calculated. in addition, the flow field distribution and the pressure on the particle surface are also calculated, when there is flow - round particle at the place of bifurcation, the move tendency of the particle is judged, the possible reasons of causing the atherosclerosis, thrombus, angioma are analysed

    本文用邊界元方法研究了一類典型心腦動脈分支血管中血液流動的流體動力特性，計算了分支血管血液流動的速度矢量分佈，同時計算了分支附近有多個顆粒狀繞流物時血液的流場分佈，及顆粒物所受壓力狀況，給出了顆粒物的運動趨勢，分析了引起粥樣斑塊病變、血瘤、血栓的可能原因
  2. Mongolica young stand, secondary natural forest, and the mixed forest of larix olgensis and fraxinus mandshurica rupr. countermeasures for controlling soil degradation were also recommended. the study got following results : ( 1 ) from young stand to mid - age of larix olgensis, with the closure of canopy and the decrease of undergrowth vegetation cover, soil acidity, enzyme activity, total inorganic phosphorus, available k, soil moisture and total porosity decreased significantly ; while soil organic matter content, humus component content, the amount of three main types of microbes, acid phosphatase activity, and bulk density in rhizosphere soil and non - rhizosphere soil increased with the increase of the amount of forest floor litter ; from mid - age stand to near mature stand, with the decrease of stand density and crown cover as well as the restoration of undergrowth vegetation after preliminary thinning, soil organic matter content, fulvic acid, exchangeable acidity, exchangeable aluminium, neutral phosphatase activity, total amount of inorganic phosphorus, the amount of actinomycetes, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil apparently increased ; from near matu re stand to mature stand, soil activity acidity, organic matter content, humus component content, available phosphorus, total amount of amino acid, available k, soil enzyme activity, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil decreased, but total phosphorus, soil acidity ( in particular, exchangeable aluminium ), and bulk density increased

    結果表明： （ 1 ）從落葉松幼齡林到中齡林，隨著林冠的郁閉和林下植被蓋度的急劇下降，林地土壤酸度、土壤酶活性、無機磷總量、速效鉀、土壤水分含量、總孔隙度呈明顯下降趨勢，而根際和非根際土壤有機質含量、腐殖質各組分含量、三大類微生物數量、酸性磷酸酶活性和土壤容重隨著凋落物的增加呈明顯上升趨勢；從中齡林到近熟林，由於撫育間伐，林分密度及郁閉度下降，林下植被蓋度逐步得到恢復，根際與非根際土壤有機質含量、富里酸、交換性酸、交換性鋁、中性磷酸酶、無機磷總量、放線菌數量、土壤水分含量、總孔隙度呈明顯的上升趨勢；從近熟林到成熟林，隨著林齡的增大，根際與非根際土壤活性酸、有機質含量、腐殖質各組分含量、有效磷含量、氨基酸總量、速效鉀、土壤酶的活性、土壤水分含量和總孔隙度呈下降趨勢，而根際與非根際土壤全磷含量、土壤酸度（特別是交換性鋁）和容重呈增加趨勢。
  3. ( 2 ) on the leading edge, the film cooling effectiveness at the zone immediately downstream of the cooling holes is affected by blowing ratio and mainstream reynolds number, while the effects are not important in the downstream zone far from the cooling holes. ( 3 ) on the front half of pressure surface, the effectiveness increases with decreasing blowing ratio at the downstream near the cooling row and it is contrary at the downstream far from the cooling row. ( 4 ) on the rear pare of the pressure surface, the effectiveness decreases with increasing blowing ratio and does not vary so much downstream in the cases of higher blowing ratio

    研究結果表明葉片吸力面端壁附近區域壓力系數分佈呈現出較強的三維特性，動葉吸力面尤其明顯；氣膜孔流量系數隨吹風比的增加而增大，在高吹風比情況下，流量系數逐漸趨于常數；在不同型面區域，冷卻效率分佈有較大的差異，而且吹風比與主流雷諾數的影響程度也不盡相同；低吹風比下，孔出口下游附近可以得到較好的冷卻，中、高吹風比下，冷氣射流在加速流動主流的作用下返回壁面進行二次冷卻，孔下游較遠區域可以得到較好的冷氣覆蓋。
  4. Finally, in the third section, by constructing some functional which similar to the conservation law of evolution equation and the technical estimates, we prove that in the inviscid limit the solution of generalized derivative ginzburg - landau equation ( ggl equation ) converges to the solution of derivative nonlinear schrodinger equation correspondently in one - dimension ; the existence of global smooth solution for a class of generalized derivative ginzburg - landau equation are proved in two - dimension, in some special case, we prove that the solution of ggl equation converges to the weak solution of derivative nonlinear schrodinger equation ; in general case, by using some integral identities of solution for generalized ginzburg - landau equations with inhomogeneous boundary condition and the estimates for the l ~ ( 2 ) norm on boundary of normal derivative and h ~ ( 1 ) ' norm of solution, we prove the existence of global weak solution of the inhomogeneous boundary value problem for generalized ginzburg - landau equations

    第三部分：在一維情形，我們考慮了一類帶導數項的ginzburg ? landau方程，通過構造一些類似於發展方程守恆律的泛函及巧妙的積分估計，證明了當粘性系數趨于零時， ginzburg ? landau方程的解逼近相應的帶導數項的schr （ ? ） dinger方程的解，並給出了最優收斂速度估計；在二維情形，我們證明了一類帶導數項的廣義ginzburg ? landau方程整體光滑解的存在性，以及在某種特殊情形下， gl方程的解趨近於相應的帶導數項的schr （ ? ） dinger方程的弱解；在一般情形下，我們討論了一類ginzburg ? landau方程的非齊次邊值問題，通過幾個積分恆等式，同時估計解的h ~ 1模及法向導數在邊界上的模，證明了整體弱解的存在性。
  5. There are two implementations for discrete reaching law, both has obvious strongpoint and limi - tations. so the two was synthesized. simulation results showed that the discrete vsc is easier to be implemented by computer control system, and go further in decoupling between chattering control and system dynamics, while the robustness is not so good as continuous time vsc

    本文的另一項工作是在連續系統的基礎上，討論了離散時間變結構控制策略和抖振控制，針對控制量加速度不足，提出了離散趨近律的兩種實現方式，由於兩種實現方式同樣具有明顯的優缺點，因此將兩種方式結合起來，增加了兩個與滑模面平行的切換面作為系統在兩種方式之間切換的界限，並通過計算機模擬驗證控制效果。
  6. In the past few years, the fire situation was serious in china, with an upward trend of conflagration incidence and economic losses. the reason is that the construction of public fire fighting facilities and fire fighting equipments is lagged down the speed of economic development, which results the difficultity in protecting and disposaling fire in towns

    近幾年，我國火災形勢嚴峻，城市發生重特大火災次數、火災直接經濟損失都呈上升趨勢，究其原因主要是城市公共消防設施、消防裝備建設滯後於經濟發展速度，滯後於城市建設的發展，因而城市處置復雜性、綜合性火災事故的整體能力較低。
  7. Rose at a rate of 1. 8 mm per year in 1961 - 2003, and 3. 1 mm per year in 1993 - 2003. it is unclear whether the recent faster rise is a long - term trend or natural variability

    1961 - 2003年間上升速度為每年1 . 8毫米， 1993 - 2003年間上升速度為每年3 . 1毫米，近期較快的上升未確定是長期趨勢還是自然變化
  8. Firstly, the airfoil ' s classic flutter ( at small attack angle ), stall flutter ( near the static stall angle ) and response ( at large attack angle ) are analyzed. it is found from the numerical results that " lock - in " will occur at certain freestream velocity range near the static stall angle, where the frequency of the vortex will be equal to the natural frequency and the flutter has the characteristic of self - induced oscillation. when the attack angle is far from the static stall angle, the vortex will have its own frequency, which differs from the natural frequency, and the flutter has the characteristic of forced oscillation

    首先研究了二維翼型的古典顫振（小攻角） 、失速顫振（失速攻角）和動力響應問題（大攻角） ，得到以下結論：在靜態失速攻角附近的一定來流速度范圍內，分離渦會發生頻率鎖定現象，分離流的頻率與固有頻率趨于相同，這時的振動呈現自激振動的特點；遠離失速攻角時分離流頻率則擺脫固有頻率的影響，此時的振動具有強迫振動的特點。
  9. In the third chapter, we introduce geometric expansion of convex planar curves. we discuss the evolution equation using minkowski ' s support function with the speed function of curvature and show that the shapes of curves become round asymptotically when the initial closed curves is smooth and convex

    限制曲線在外法向上的演化速度是另一類特殊的曲率函數，研究相應的方程，我們得到了在初始為凸的閉簡單光滑曲線的條件下，曲線的最後形狀是漸近地趨於一個圓。
  10. Abstract : in the internal circulating fluidized bed, there exist the moving zone, fluidizing zone and heat transferring zone with different fluidized air velocities. the convection heat transfer coefficient of immersed tube in the heat transferring zone is impacted by the velocity of the moving zone nearby and its data and change trend are obviously different with those of the common bubbling bed. the maximum heat transfer coefficient is evidently higher than that of the bubbling bed. as the bed materials have not been fluidized in the heat transfer zone, the coefficient has increased highly. the curve of that changes gently, feasilble to control the combustion intensity in the fluidizing zone

    文摘:垃圾焚燒系統中，內旋流流化床存在不同布風速度的移動區、流動區和換熱區，處于換熱區的埋管的對流換熱系數受附近流動區氣流參數的影響，其變化趨勢及數值大小與普通鼓泡型流化床之間有明顯不同：最大的對流換熱系數明顯高於鼓泡床；換熱區尚未流化時，對流換熱系數已經大幅提高；整條換熱曲線的變化比較平緩，易於流化床濃相床內換熱。
  11. With the advent of laser intensities above 1018 watts per square centimeter, however, the electrons ' oscillation velocities approach the speed of light, and relativistic effects fundamentally change the electrons ' response to the light

    可是當雷射強度進展到每平方公分超過1018瓦時，電子振動的速度也趨近光速，於是相對論效應將徹底改變電子對光的反應。
  12. By analyzing the internal and external developing trend of grass - eating animal, we find that the recent percentage of grass - eating animal in the whole stocking raising of developed country, developing country, our country, world average level and shandong province are 80 %, 82 %, 45 %, 82 %, 52 % respectively, . the production of pig and chicken in developed country are almost saturation and they increase slowly in shandong and china recently

    2 、通過對國內、外畜種結構比較，分析草食家畜發展趨勢。可以看出草食家畜在畜牧業中所佔比例，近年來發達國家保持在大約80 % ，發展中國家82 % ，我國45 % ，世界平均82 % ，山東省52 % ;發達國家豬雞生產趨向飽和，我國及山東省豬雞生產增長速度緩慢。
  13. Economic growth in the eurozone has progressed " slightly faster than expected " and " should continue to expand at a similar pace throughout the rest of this year, " according to a report on october 5th released by the european commission, the executive arm of the european union

    歐盟執行機構歐洲委員會於10月5日公布的報告稱，歐元區的經濟發展「比預期的要稍快」並「將在今年後幾個月里以相近的速度擴大發展趨勢」 。
  14. When the anisotropy is not taken into account, the obtained image almost has the same variation pattern with that when anisotropy is considered. but pn velocities are not well consistent with geology for the former than the later

    如果不考慮pn波速度的各向異性變化，波速橫向變化的整體趨勢和考慮各向異性時接近，但pn波速度與地質構造吻合得沒有考慮各向異性時好。
  15. In this thesis, the fields of velocity in the area near the wall and the core area are discussed in stress. thinking about the fluctuate characters of flow in cfb boiler, the rules of particles flow is summarize according to macro analysis

    文中著重對近壁區和中心區的速度場進行了討論，分析了不同的工況條件下，顆粒的速度變化趨勢，結合循環流化床流動的脈動特點，從宏觀上總結出顆粒流動特性。
  16. Cache memory is intended to give memory speed approaching that of the fastest memories available, and at the same time provide a large memory size at the price of less expensive types of semiconductor memories

    快取記憶體主要希望所有的記憶體速度能夠趨近最快速的記憶體，同時又能夠以最低廉的價格提供最大容量的記憶體
  17. Cache memory [ / color ] is intended to give memory speed approaching that of the fastest memories available, and at the same time provide a large memory size at the price of less expensive types of [ color = # dc143c ] semiconductor memories [ / color ]

    快取記憶體主要希望所有的記憶體速度能夠趨近最快速的記憶體，同時又能夠以最低廉的價格提供最大容量的記憶體
  18. [ color = # dc143c ] cache memory [ / color ] is intended to give memory speed approaching that of the fastest memories available, and at the same time provide a large memory size at the price of less expensive types of [ color = # dc143c ] semiconductor memories [ / color ]

    快取記憶體主要希望所有的記憶體速度能夠趨近最快速的記憶體，同時又能夠以最低廉的價格提供最大容量的記憶體
  19. The text choose fenjin countryside of changchun as the typical district, choose rs and gis as the technological platform, utilize serial statistical data of land use from 1990 to 2002, remote sensing image and actual census data, adopt arc and statistical analysis method to analyze the change of land use structure in the process of urbanization, achieve the pace, range, trend and shift matrix of land use change ; at the same time analyzing economy, social and ecological benefit. the result shows : the agricultural area is reduced year by year, construction area is increased gradually, the social economic benefits are obviously improved, but the ecological benefits of the land drop to some extent. the urbanization process is developing quickly but it sacrifices the environments

    本文選擇長春市寬城區奮進鄉為典型區，以rs和gis為技術平臺，利用1990 - 2002年的土地利用系列統計資料、遙感影像解譯數據以及實際調查數據，採用arc方法和統計分析等方法對城市化進程中城市近郊的土地利用結構變化進行分析，獲得了土地利用變化的速度、幅度、趨勢及轉移矩陣;同時將同一時段奮進鄉的經濟、社會、生態效益的變化與土地利用變化進行對比分析，結果表明:農用地面積逐年減少，建設用地面積逐漸增多，社會經濟效益明顯提高，但土地的生態效益卻有所下降。
  20. In the last few years, the speed - sensorless vwf system of induation motor has become a new study hotspot and development trend. the paper primarily studied the design method and software of speed - sensorless vwf system of induction motor based on the digital signal processor ( dsp ) tms320f240

    近幾年來，感應電動機無速度傳感器變頻調速系統已成為新的研究熱點和發展趨勢。本文主要研究了基於數字信號處理器（ dsp ） tms320f240的全數字化感應電動機無速度傳感器變頻調速系統的設計方法及軟體實現。
分享友人
分享到 Line

分享到臉書