極限流線 的英文怎麼說

中文拼音 [xiànliúxiàn]
極限流線 英文
limiting streamline
  • : i 名詞1 (頂點; 盡頭) the utmost point; extreme 2 (地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • : Ⅰ名詞(指定的范圍; 限度) limit; bounds Ⅱ動詞(指定范圍, 不許超過) set a limit; limit; restrict
  • : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
  • : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
  • 極限 : 1 (最高的限度) the limit; the maximum; the ultimate limit; limitation; extremity; tipping point...
  • 流線 : filament line; filum aquae; flow line; streamline; streamlining; line of flow; stream filament流...
  1. Firstly, the status of our nation ' s water resources, flood and arid hazards is overviewed to illustrate the necessity for study on dynamic control of flood season limited water level. disadvantages in traditional limitsd water level design, static control of limited water level design, static control of limited water level and fuzzy limited water level curve are pointed out, and mending methods for these are introduced. dynamic control and its key problems are analyzed hi next section. the allowable range of limited water level is determined, so as the allowable extreme risk index. the definition of extreme risk is re - illustrated, risk analysis methods in reservoir operation is discussed either. according to the definition of extreme risk rate, the allowable extreme risk rate of reservoir is systematically demonstrated with variant extreme risk indexes and flood season limited water level

    本文首先闡述了我國水資源狀況和水旱災害、說明水庫汛期制水位動態控制研究的必要性;介紹了傳統汛水位設計、汛水位靜態控制、模糊汛水位過程存在的問題及其初步改進方法;分析汛期制水位動態控制的方法及關鍵問題;進一步闡述了水庫風險率的定義;根據風險率定義,詳細敘述了不同風險指標時、不同汛期制水位下起調,水庫所能承受的風險率計算方法。然後,基於風險率計算方法,以白石水庫為背景,研究「考慮壩體自身安全、考慮壩體安全與下游防護對象控制下泄量的汛水位動態控制的風險率」 。
  2. The limit cycle oscillation is intermittent, so in the soft nonlinear regime the limit cycle oscillation can be avoided by slightly adjusting the current. detuning and length of the interaction region

    由於環振蕩是間斷出現的,所以在軟非性區域,適當的調節電、失諧量和相互作用區長度,可以避免器件工作在環振蕩態上。
  3. The radiation field evolves from a steady saturation state to a limit cycle oscillation state, and eventually to chaotic oscillation state as the current increases, the region in which the field exhibits limit cycle or chaotic oscillation is called the " soft " and " hard " nonlinear regime, respectively : ( 1 ) in the " soft " nonlinear regime, the radiation field is characterized by period doubled bifurcation and the discrete power spectrum

    隨著電的增大,輻射場經歷由穩定飽和到環型的周期振蕩,並最終過渡到非周期性混沌振蕩的演化過程,按其狀態可分為「軟」和「硬」兩種非性區域: ( 1 )在「軟」非性區域,場的環振蕩態和穩定飽和態是交替出現的,其特徵是典型的倍周期分岔,輸出功率譜是分立的。
  4. Usually, hpm devices working in the high current and large field amplitude state, after the field reaches saturation, the nonlinear effects will become extremely strong so that the intrinsic nonlinear phenomena ( for example limit cycle oscillation and chaotic behavior ) of the system occur. these nonlinear behaviors directly influence the output characteristic of the devices

    在通常情況下,高功率微波源器件都工作在大電和強場工作狀態,尤其在場達到飽和以後,系統的非性效應將變得非常明顯,非性系統所特有的一些現象(如,環型振蕩和混沌行為)將出現,這些非性現象直接影響器件的各種輸出特性。
  5. Firstly, some basic properties of the limit shadowing are given ; secondly, we give the characterization of both lin - ear automorphisms and linear flows on r ~ ( n ) with the limit shadowing property ; thirdly, as applications we prove that the hyperbolic endomorphisms on t ~ ( n ) have the limit shadowing properties, smale " horseshoes " have the same prop - erties on their invariant sets

    首先,給出了跟蹤性的一些基本性質;其次,得到了n維歐氏空間上性自同構及具有跟蹤性的特徵;最後,作為應用證明了雙曲環面自同態以及smale 「馬蹄」在其不變集上具有跟蹤性。
  6. The aim of mips pipeline is that one instruction completed in one period averagely

    Mips的設計目標是要達到平均每個時鐘周期完成一條指令,這就是速度。
  7. Pipeline increase the cpu efficiency greatly, but the exist of instruction correlation make the pipeline block and delay frequently, as a result it can ’ t achieve the aim that one instruction completed in one period averagely

    但由於中指令相關等問題的存在,常常使發生阻塞延遲,使得指令不能夠在預定的時刻完成,因而無法達到速度的目標,更無法超越該速度。
  8. For increase the cpu efficiency more, base on the research of existing 32 - bit mips pipeline, this paper create the double - launching pipeline. by this design, one or more than one instruction completed in one period averagely, and increase the cpu efficiency remarkably

    為了進一步提高的執行效率,超越速度,本文在對現有32位mips進行研究的基礎上,創新性地提出了基於32位mips架構的雙發射設計方案。
  9. Interrupters used in power switchgear, x - radiation limits for ac high - voltage power vacuum

    電力開關用交高壓電力真空斷路器的x射輻射
  10. This theoretic model employs the basic idea of correlation measurement, achieve the density wave speed by the correlation of the signals of upper and lower sensors, and get the total flow rate and water cut through the theoretic relationship of density wave speed and total flow rate as well as holdup with the help of drift flux model so as to accomplish the oil / water two - phase flow measurement at last, using the limited available experiment data, the theoretic model has been simplified into an applicable linear alternative which is suitable to homogeneous oil / water two - phase flow measurement to accomplish the oil / water two - phase flow measurement using the density wave phenomena is of highly theoretically valuable for density wave theory research as well as oilavater two - phase flow measurement research. to develop new type oil / water two - phase flow instrumentation based on this theoretic measurement method will be very applicable and promising

    在此基礎上,針對穩態密度波理論提出了基於密度波理論的油水兩相測量理論模型,該模型以密度波傳播理論作為基礎,通過上下游傳感器信號相關獲得密度波傳播速度,利用密度波傳播速度與總量以及持相率的理論關系結合漂移模型來求解總量和含相率,實現油水兩相的測量,在理論分析的基礎上,在實驗資料有的條件下,對基於密度波理論的油水兩相測量理論模型作了的簡化,提出了本文油水兩相測量理論方法應用在測量均勻油水兩相中的實用性模型。
  11. But high - voltage lines are already approaching the million - volt limit on insulators and the operating limits of semiconductor devices that control dc lines

    不過,高壓路的絕緣體已經逐漸接近百萬伏特的制,而控制直路的半導體裝置,也即將達到運作
  12. Research on surface and grain boundary passivation mechanism obtained effects of surface recombination on crystalline silicon solar cell performance and the theoretical expression of grain boundary recombination velocity. the limit ratio of short - circuit current increment for anti - reflection coating utilization on solar cells was obtained. the crystalline silicon solar cell spectral response, contact resistance and minority carrier lifetime measurement systems were established

    鈍化機理研究獲得了表面復合對不同表面摻雜濃度晶體硅太陽電池性能的影響、表面和界面復合速度的理論表達式;研究得到了減反射膜對太陽電池短路電增量比的;建立了太陽電池光譜響應、柵接觸電阻和少子壽命等測試系統。
  13. Vil gmagyars g _ hajl ka n h ny k p az pusztaszeri ki ll t sb l : magyarorsz g kir lyai, uralkod i, csal df i, c merei, t ? rt nete, t rk pek, mer tett pap r, plak t

    常州星光電子有公司生產整體引,整橋堆引、數碼管引、電感引、電容器引、耐熱合金圓銅、高電導銅包鋼復合纜,高精度圓銅、鍍錫圓銅
  14. Fem analysis of associated and non - associated flow rules in theory of slip line field

    滑移場理論中不同動法則的分析有元解
  15. The vector magnetic potential of a system consisting a line electric current and an infinite long magnetic dielectric column is calculated with the method of separation of variables and method of images, it is pionted out that the vector magnetic potential of a system consisting a line electric current and a magnetic dielectric plane, an ideal paramagnetic column, a superconductor column, and a line electric current in homogeneous magnetic field can all be deduced from our calculation

    摘要用鏡象電法和分離變量法計算了與無長磁介質圓柱系統的磁矢勢,指出與無大磁介質分界平面、與超導體圓柱、均勻外磁場中有磁介質圓柱系統時的磁矢勢都可以由與磁介質圓柱系統的磁矢勢的情形給出。
  16. The power angle characteristics are acquired and compared with the unsaturated curves. it is concluded that the stability limit of the power angle is less than 90 degree. reactive power regulating curves are calculated and compared with those curves when saturation effect is not considered, the result is that u type curves are deviated to the right

    通過對同步發電機各種運行曲的計算,在已有文獻的基礎上更進一步分析了鐵磁材料飽和以及磁場畸變對同步發電機運行特性和參數的影響;求出了空載特性曲和零功率負載特性曲,在不同的電樞電下計算得到的波梯電抗不同;求出了功角特性曲,與不計飽和時的功角特性曲相比較,功角穩定小於90 ;求出無功調節曲,與不計飽和時相比較, u型曲向右偏移。
  17. The unified power flow controller ( upfc ) is one of the most enterprising realizations of the idea of flexible ac transmission system ( facts ). having the ability of controlling most of the basic power system parameters, upfc can flexibly adjust the real and reactive power through the transmission line, damp the oscillation, and enhance the stability of power system and so on

    統一潮控制器( upfc )是靈活交輸電系統中最有代表性的成員,具備控制多種電力系統參數的能力,因而可以靈活地調節路有功和無功功率、阻尼系統振蕩、增強電力系統的穩定性和提高輸電路的傳輸
  18. The nonlinear panel flutter equations are also solved in time domain. the limit cycle flutter characteristics of nonlinear panel flutter are investigated and the effect of temperature and airflow speed on the nonlinear panel flutter characteristics is studied

    通過對非性壁板顫振方程的時域求解,研究了壁板的環顫振特性,得到了溫度、氣速度等因素對非性壁板顫振特性的影響規律。
  19. In chapter two, using the hydrodynamical equations for electrons and maxwell equation and through complicated calculation, we finally obtain a set of equations which describe the non - steady and nonlinear interactions between plasma and field in the wake region of a moving body in space

    第二章是從描述電子的磁體方程和麥克斯韋方程出發,通過計算,最後得到了一組在考慮非靜態下描述空間飛行器遠尾區內等離子體與場之間的非穩態非性相互作用耦合方程。
  20. Especially, when the isocline of x is monotone decreasing in 0 < x < 1, the svstem has no limit cycle and is globally stable ; next, we construct a saddle bifurcation at the boundary equilibrium and a degenerated bogdanov - takens bifurcation at the interior equilibrium by choosing appropriate parameter values in the following two sections, where our work are based on the theory of central manifolds and normal torms. we prove that is a codimention 3 focus - type equilibrium. system ( 6. 1 ) will have two limit cycles at some appropriate bifurcation parameter values, and have homoclinic or double - homoclinic orbits at some other appropriate bifurcation parameter values ; at last, we study the qualitative properties of the system at infinite in the poincare sphere

    因為系統在( 0 , 0 )點處沒有定義,這給研究其在( 0 , 0 )附近的動力學性質帶來了困難,我們應用文獻[ 17 ]中關于研究非性方程奇點的系列理論和方法,圓滿解決了這一問題,給出了第一象內當t +或t -時,在全參數狀態下系統的軌趨于( 0 , 0 )點的所有可能情況,其相圖也得以描繪;並且,系統不存在環的幾個充分條件我們也予以列出,當x的等傾在0 x 1范圍內遞減時,系統不存在環,全局漸近穩定;然後,我們以中心形定理和正規型方法為主要工具,巧妙選擇參數,分別構造了一個余維2的鞍點分岔和一個余維3退化bogdanov - takens分岔,證明了平衡點是余維3的焦點型平衡點,存在參數, m ,的值使得系統( 6 . 1 )有兩個環,還存在參數, m ,的另外值使得系統( 6 . 1 )有同宿軌或雙同宿軌。
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