物理量值 的英文怎麼說
中文拼音 [wùlǐliángzhí]
物理量值
英文
magnitude of physical quantity-
Perfect pre - processing and post - processing function is one of the main factors to evaluate the vitality and market value of the finite element analysis system surveying today development of finite element analysis technology, most of which concentrate on establishing fine user interface, also has some limitation on application, and especially, the research on the visualization of arbitrary cut - plane is always in ascendants to realize the visual processing on cut - plane needs reprocessing the results of finite element analysis which have get, so the algorithm is two parts : seeking the physical value of cut - plane and drawing 2d contours, the former, based on the theory of stress on " arbitrary inclined plane " in physical mechanics, use the method of linear interpolation method to get the coordination and physical value of intersection between cut - plane and element arris ; the latter, based on the tables on elements, nodes, stress and strain, summarize a rapid algorithm of generating 2d contours based on the grid. this thesis synthesizes there two parts and get a visual processing program under fortran
縱觀有限元分析技術的發展,目前大多集中在建立良好的用戶界面上的研究仍存在許多應用上的局限性,其中對任意剖面上可視化的研究仍處于方興未艾的階段。要實現任意剖面上可視化處理,必須先將得到的有限元計算結果進行再處理,因此在演算法上分為兩部分:求任意剖面上物理量值的演算法及二維等值線演算法。前一部分以彈性力學中「任意斜截面的應力」為理論基礎,利用線性插值方法得到截面與單元棱邊的交點坐標及交點物理量值;在此基礎上;根據已得到的單元及節點序號表、應力應變物理量表,總結出一種基於有限元剖分網格的快速生成二維等值線的演算法。Based on the hmiltonian expression for hydrogen atom in combination with the theory proposed, the theoretical values of the hydrogen atom ' s energy, ground state energy and spectrum constant and the electron orbital angular momentum are given
根據氫原子的量子哈密頓量表示,結合創新的量子算符代數理論,得到氫原子的能量、氫原子的基態能量、電子軌道角動量、氫原子的光譜常數等各種物理量的理論值。The equation including the nonlinear dispersion, i. e. the modified nonlinear schrodinger ( mnls ) equation, is a better model. in this thesis, we take mnls solitons as a model for femtosecond soltions. then based on the recently developed direct perturbation theory for perturbed mnls equation, we study the raman self - frequency shift of femtosecond solitons and its suppression by the means of frequency filters. for this purpose, first, we define the physical parameters of mnls solitons ; next, through the direct perturbation theory for perturbed mnls equation, under adiabatic approximation, we obtain the evolving parameters of mnls soliton on our questions and then choose the parameters of frequency filters based on it ; at last, we directly numerically simulated our questions by split - step fourier ( ssf ) method after improving the arithmetic of the differentiation of the nonlinear item for satisfying mnls equation
本論文以mnls孤子作為光纖飛秒孤子的模型,通過新近建立的mnls孤子直接微擾理論,研究光纖中由拉曼效應引起的飛秒孤子在傳輸中的自頻移,以及通過頻率濾波對自頻移的抑制。為此,首先給出描述mnls孤子的各物理量,然後用mnls孤子直接微擾理論,解析地得到這些問題絕熱近似下的孤子參數演化,並由此選擇頻率濾波的參數,最後用分步傅里葉方法,在對非線性項微商的演算法做出了適合於mnls孤子的改善後,對拉曼效應及頻率濾波進行了直接數值模擬,其中頻率濾波參數用微擾理論確定。The initial field of the model is the in situ observational data. combining the observational data by the doppler weather radar, the distribution and evolution of macro - physical as well as micro - physical variations such as wind field structure, radar echo structure, overhang echo, bound weak echo region, strong echo wall, water content, etc. in the storm were analyzed
利用中國科學院大氣物理研究所建立的完全彈性三維雹雲數值模式,模擬了1996年6月29日發生在北京東北部京冀交界地區的一次強單體雹暴過程,並結合多普勒雷達探測資料,分析了風暴的流場結構,雷達回波結構特徵,含水量場等宏微觀物理量的分佈及其演變。Our treatment shows in the raman effect case, mnls solitons, the same as nls solitons, keeps its energy, initial center and initial phase unchanged. however, the raman effect, not the same as nls solitons. reduces its amplitude, widens its width and under the same conditions, the self - frequency shift of mnls soltions is closer to the result of numerical simulation. in the raman effect together with frequency filters case, mnls solitons, the same as nls solitons, keeps initial center and initial phase unchanged and bandwidth - limited frequency filters can make the mean frequency of mnls soltion stand a steady value at the red side of the initial mean frequency, i. e. suppress the self - frequency shift of mnls soltions. and that, the other physical parameters of mnls soltion last stand a steady value. however under the same conditions, the steady value of the mean frequency of mnls soltions is closer to the initial mean frequency and the result of numerical simulation
有所不同的是, raman效應雖然不改變孤子能量,但會引起孤子峰值的下降和寬度變寬,且在同一條件下, mnls孤子微擾理論得到的自頻移比nls孤子微擾理論得到的更接近直接數值計算結果。有限帶寬的頻率濾波也不引起mnls孤子初始中心、初始位相的改變,選取適當的頻率濾波器參數值能使孤子的平均頻率穩定在初始平均頻率的紅側一穩定值,抑制了自頻移,而且孤子的各物理量最後都穩定在一穩定值,這些與nls孤子微擾理論都是類似的。有所不同的是,寬度為飛秒量級下, mnls孤子平均頻率的穩定值更接近初始平均頻率,更接近數值計算結果。In chapter 3, the subgrid eddy - viscosity model for large eddy simulation is applied to calculate the three dimensions unsteady periodic turbulent flow in yantan francis turbine. the pulsating characteristics of some main physical parameters in flow field are found. the calculated axial water thrust of hydraulic turbine agrees with the model - test value
第三章採用大渦模擬亞格子渦粘模型,對巖灘混流式水輪機的流場進行三維非定常湍流分析,得到了流場中各物理量的脈動特性,計算出ms的軸向水推力與模型試驗值大小相當;同時論證了對于下機架承重的混流式水輪發電機組可採用其推力軸承負荷作為水電站廠房振動的最大垂直激振荷載。The contrast analysis for the vertical distribution feature of the simulated physical quantities such as vorticity, divergence, vertical velocity. spiral degree etc suggests that there are a good disposal among the various physical quantities fields in the different stage during the period of sandstorm development, and reveals that the dynamic mechanism of the forming, developing, decreasing of the sandstorm weather and trigger and indication effects of the micro - mesoscale systems and secondary vertical circulation to the occurring and developing of sandstorm in northwest area
對渦度、散度、垂直速度、螺旋度等物理量的水平和垂直分佈特徵進行對比分析,發現各物理量場在沙塵暴發展的不同時期有著很好的配置,揭示出西北地區沙塵暴天氣的形成、發展、消弱的物理機制和中小尺度系統、次級垂直環流對沙塵暴天氣發生發展的觸發和指示作用。沙塵暴區上空螺旋度垂直分佈為高層負值,低層正值,螺旋度大小的演變與沙塵暴的出現有一定的對應關系。Based on the idea of subordinate meshes, we bring forward a new method of weighted volume which is used for constructing linear interpolation polynomials. besides, according to the eno interpolation on unstructured grids, a class of linear interpolation polynomial is developed on irregular quadrilateral grids and allows very small oscillation. program in fortran is given for a remapping algorithm developed by caiqingdong
另外,根據非結構網格的eno插值的思想,構造了四邊形網格網眼內的線性插值多項式,由於利用其插值點自適應選取的特性,在物理量變化劇烈區域選取最光滑區域的點來插值,雖然不能保持單調性,但只允許出現非常小的振蕩。The averaged relative change of the dependent variables between two successive iterations and the variation of this averaged change were selected as two input variables
該方向選取的控制輸入量為:相鄰兩次迭代所有內節點上物理量的平均相對改變值;相鄰兩次迭代間這一平均相對改變值的變化量。The research of system makes the observational information of tongbo dam realize standardization manage, tidy up and analyze the information quickly and exact, give the environmental physics number and diagnostic numer of displacement, stress and seepage, build the mathematical model of each observational information, evaluate the working modality of the dam, thereby ensure safe working of the dam
系統的研製使桐柏抽水蓄能電站的觀測資料實現規范化管理,快速、準確地整理、分析觀測數據,給出環境物理量及位移、應力和滲流等觀測效應量的特徵值,建立各觀測效應量的數學模型,分析評估大壩的工作形態,從而保證大壩的安全運行。By using the psu / ncar mm5 model, we made a numerical simulation about the severe sand - dust storm that occured in the north china on 20march in 2002
20 」強沙塵暴天氣過程進行了數值模擬,並利用模式輸出的各物理量對沙塵暴進行診斷分析,得出了華北地區沙塵暴的形成、發展機制。The weather analysis and climatic characteristics of the heavy - hard rainfall in this area, structure characteristics during the rainstorm, the mechanism and structure of mesoscale systems bringing rainstorm and etc. are studied by conducting diagnostic analysis, theory of dynamics and numerical simulation. the influence on the rainstorm causing by mesosc ale topography piling on the plateau, the particular valley topography in northeast plateau and complex surface vegetation are researched by numerical experiments
本論文試圖採用診斷方法、診斷和天氣動力學理論相結合的方法、數值模擬等方法對高原地區大到暴雨的天氣、氣候特徵,暴雨產生時的物理量場特徵、產生暴雨的中尺度系統的發生機理和結構特徵等方面進行研究,對疊加在高原上的中尺度地形、高原東北部特殊的外流河谷地形及復雜下墊面性質對暴雨的可能影響進行數值試驗,以揭示高原暴雨發生發展的物理機制。Thermal insulation - mass transfer - physical quantities and definitions iso 9346 : 1987 ; german version en iso 9346 : 1996
絕熱.整體傳導.物理量值和定義Thus it makes various weathers at definite region. by analysis physical diagnose quantities, we can easily find that the vertical movement, the vapor transfer, the stability at t - logp chart, all related with the precipitation when rainstorm occurs. they gave plus effects to the rainstorm
通過對物理量的分析可以看出,降水發生時的垂直運動場、水汽通量、 t - logp的穩定度參數等物理量值,非常有利於暴雨的產生、發展和維持,也就造成了這次遼西地區大范圍的暴雨過程。Stochastic resonance has attracted the attentions in many fields of science in recent decades, but it is a new method and theory in signal processing. in context of signal processing, for signal transmission by nonlinear systems, stochastic resonance is commonly described as an increase hi the signal - to - noise ratio ( snr ) at the output, which is obtained through an increase of noise level or tuning system parameters
從信號處理的角度來講,隨機共振是在非線性系統信號處理中,輸入為強噪聲背景下的微弱信號,系統輸出以適宜的物理量來衡量,如信噪比,通過調節輸入噪聲強度或系統參數,都可使得系統輸出信噪比達到一個最大值,此時,稱信號、噪聲和非線性系統所產生的協同現象為隨機共振。The circumstance calculated by mm5 forecast system is very near compared with the real one ;. the physical quantity and precipitation calculated by mm5 forecast system should be well used in work ; the area and numeric of the precipitation forecasted by mm5 have some difference compared with the fact, that needs more some more work to make progress
該模式對這次冷渦暴雨的形勢模擬與實際形勢場極其接近,是一個成功的應用範例; ( 5 ) 、 mm5模式對各種物理量和降水場的模擬結果與實況接近,在精細化的定點定量預報實踐中具有很好的參考價值; ( 6 ) 、 mm5模式預報降水范圍和強度與實況還有一定偏差,需要進一步深入的工作來改進。They make sure the definite of the necw, the spread of the necw, the start time of the necw. above all, the study of the meso - scale system gives much help in analysis the necw. mr. shou shaowen studied the wet whorl q - vector divergence and relative whorl " in several rainstorms, which occurred in guizhou, and get some useful conclusions
本文從一次東北冷渦的發生發展過程出發,利用9210系統廣播的實況數據及t213數值預報的再分析產品,研究討論了特定冷渦形勢下遼西地區暴雨的發生機制,對其產生暴雨時的相關物理量及診斷量進行了分析。According to the principles of physical measurement, the measurement of ground resistance do not posses repeatability and univalue. practice show that the ground resistance is an unscientific physical quantity
摘要根據物理量測量的基本原則可以看出,接地電阻的測定不具有重復性和單值性,實踐顯示,接地電阻是一個無法測定的物理量。Abstract : a display technique of surface rendering was developed in order to display the numerical simulation results of 3 - d scalar field physical quantity of the whole casting during solidification process visually and precisely
文摘:為了更直觀和準確地顯示整個鑄件各部位在凝固過程中各時刻的三維標量場物理量的數值模擬結果,設計了一種稱之為表面繪制的顯示技術。The above physical quantities of quantum take different values if the atomic system are in different quantum states
當原子系統處于不同的量子狀態時,上述量子物理量的取值完全不同。分享友人