有理表達式 的英文怎麼說

中文拼音 [yǒubiǎoshì]
有理表達式 英文
rational expression
  • : 有副詞[書面語] (表示整數之外再加零數): 30 有 5 thirty-five; 10 有 5年 fifteen years
  • : Ⅰ名詞1 (物質組織的條紋) texture; grain (in wood skin etc ) 2 (道理;事理) reason; logic; tru...
  • : Ⅰ名詞1 (外面;外表) outside; surface; external 2 (中表親戚) the relationship between the child...
  • : Ⅰ動詞1 (暢通) extend 2 (達到) reach; attain; amount to 3 (通曉; 明白) understand thoroughly...
  • : 名詞1 (樣式) type; style 2 (格式) pattern; form 3 (儀式; 典禮) ceremony; ritual 4 (自然科...
  • 有理 : 1 (有道理) reasonable; justified; in the right 2 [數學] rational; 有理函數 rational function; ...
  • 表達 : deliver; express; show; voice; convey; communicate
  1. 2 the theoretical values of the second virial coefficient are precisely fitted into some simple expressions. according to one of them, a new temperature function for the quadratic terms in cubic equations was derived : the function is simple, general, without acentric factor, truly predictive, theoretically sound, and applicable to all the van der waals - type equations

    2將第二維里系數的論值較精確地擬合為幾種簡單的,並據此導出了立方型狀態方程中二次項溫度函數的新形簡單、通用,不含偏心因子,具真正的預測功能和堅實的論基礎,原則上適用於所vanderwaals型方程。
  2. Based on the analysis of the beat frequency signal, the expression of the beat frequency phase is deduced. the expression indicates physics meanings of quantities to be detected and supplies theoretical bases for detection methods. by using two - dimensional fft, the range and velocity information of target is got out from the echo. according to the periodicity range ambiguity of symmetrical pulses in fmpcw, the processing method of sliding time window is used

    通過對差頻信號進行的分析,得出了差頻相位的具體現出了要檢測的各量的物意義,對檢測的方法提供了論依據。利用二維fft方法,可以效地提取回波中目標的距離與速度信息。對于fmpcw信號由於均勻脈沖產生的周期性距離模糊的問題,採取時間波門的處方法。
  3. Third, on the base of expatiating on experimental research method and theoretical research method of joints, the paper points out two kinds of valid methods, which are used to analyze the tube joints stress of dendriform structure by making use of semi - analytical method and inelastic large deflection finite element analysis method, confirms to apply the evaporative pattern casting process as the facture method of dendriform structure cast joints, and detailed dissertates the casting theory, casting process, generation cause and prevention measure of casting flaws, heat treatment method and inspection standard about cast steel joints

    然後在闡述樹狀結構節點實驗研究方法和論研究方法的基礎上,提出了利用半解析法和彈塑性大撓度限元法兩種效分析樹狀結構管節點應力的方法,並給出兩種方法的詳細及它們各自的優缺點。通過對鑄鋼件常見製作方法的介紹,確定了採用消失模法作為樹狀結構鑄鋼節點的製作方法,並詳細論述了用消失模法製作鑄鋼節點的鑄造原、鑄造工藝、鑄造缺陷產生的原因及防治措施、鑄鋼節點的熱處方法以及檢驗標準。
  4. Second, we discuss the influence of environmental referance potential temperture and thermal wind on mesoscale symmetric instability. we find the expression of disturbance stream function and criterion of symmetric instability by analytical method and conclude that change caused by environmental referance potential temperture with height and thermal wind make critical richardson number and disturbance critical half - wave length of symmetric instability larger, that is to say, they benefit the occurance of symmetric instability. third, we study nonlinear perturbation analysis of mesoscale vertical circulation and evolution equation by means of f - plane. non - hydrostatic balance and filiter model

    第二,討論了環境位溫與熱成風因子對中尺度對稱不穩定的影響。運用解析的方法求出了擾動流函數的和對稱不穩定的判據,發現環境參考位溫隨高度的變化與熱成風因子使得對稱不穩定臨界查遜數及擾動的臨界半波長都變大,這利於對稱不穩定的發生。第三,採用f平面、非靜力平衡、濾聲波模,討論了中尺度垂直環流非線性攝動分析及演變方程。
  5. Based upon virtual displacement method and the updated - lagrangian approach, stiffness matrices for two - dimensional elastic - plastic beam model in large displacement were proposed, in the derivation of which transverse stress was included because it was believed that part of the 2nd order effects of various stresses, which are in equilibrium with each other and with the external loads, will counteract each other and neglecting either part would possibly lead to incorrect results

    利用虛位移原和更新的拉格朗日方法,導出了大位移彈塑性梁單元剛度矩陣的顯,在剛度矩陣推導中引入了截面內非線性剪應力和橫向應力的影響,剛度矩陣通過了剛體檢驗。之所以要引入橫向應力的影響,是因為本文認為,保持平衡所需的所應力,它們各自的二階效應會相互抵消,因此忽略其中的任何一項都可能導致不正確的結果。
  6. Based on historic radiosonde data of changchun city, jilin province and xian city. shanxi province and on the typical model of profiles of cloud liquid water content for stratiformis, the coefficients of retrieval equation are obtained as the functions of height for each month from april to july in the two cities. furthermore, we explore the internal physics signification of retrieval coefficients ' distributing according to every month and have comparisons between the two cities. then the numerical simulation tests of the accuracy of retrieval results are given : the statistical relative deviation of retrieved values of l to the simulated " trues " on the ground is 15 - 25 % and that at altitude of 6km is 5 - 10 %, that means the retrieval method and implementation of the method are applicable to processing measurements of an airborne radiometer made in china recently

    本文介紹機載對空微波輻射計探測雲中路徑積分液態水含量( l )的輻射傳輸原和反演方法;根據吉林省長春市和陜西省西安市的歷史探空資料和典型的層狀雲液水垂直分佈模,得到這兩個地區4 - 7月各月的隨高度而變的反演公及其系數的;探索了和反演系數關系的大氣的影響,並在各個月份之間進行了比較分析;給出了反演誤差的數值模擬檢驗結果:在地面反演值對『真值』的統計相對偏差是15 - 25 ,在6公里高度處為5 - 10 ,明該方法已具實用可接受的精度。
  7. Are used in above deduction. therefore it is necessary for us to review the basic concepts of quantum mechanics and relativity from the deflection notion of analytical space - time so as to get a profound math expression - space - time wave function stwf to link relativity up to quantum mechanics. assuming that one plane cosine wave travels along

    因此,我們必要從解析時空論的時空偏轉原出發,對量子論和相對論的基礎概念重新認識,進而得到更廣泛更深刻並將量子論和相對論連系在一個方程下的新的數學-時空波函數。
  8. Creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design

    基於現的試驗資料,高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發,利用積分中值定和疊加原,推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的,對比了應用徐變系數分析徐變的限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別,並建議應從概念設計的角度出發,採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響
  9. Abstract : creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design

    文摘:基於現的試驗資料,高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發,利用積分中值定和疊加原,推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的,對比了應用徐變系數分析徐變的限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別,並建議應從概念設計的角度出發,採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響
  10. Abstract : based on the objectivity of space, time and their measuring, the author gives a ideal experiment of space and time measuring, educe the difference between true time and metrical time ( this difference results from the finity of light speed ), thus proves the relativity between metrical time and true time and the relativity between given reference points, gives the express formulas of relative velocity

    提要:從時空及時空度量的客觀性、絕對性出發,通過具體的空間、時間測量想實驗,導出測量時刻、時間與客觀時刻、時間的差異(這種差異的根源在於光速傳播的限性) ,從而說明測量時刻、時間對于客觀物量及不同參照點的相對性,給出了客觀勻速直線運動的相對速度
  11. A simply and analytical formula of the axial light intensity distribution behind a circular aperture is derived by using the helmhotz - kirchhoff integral theorem and the kirchhoff ' s boundary conditions. it is studied the nonparaxial on - axis intensity distribution throughout the whole space behind a circular aperture. an accurate formula to calculate the fresnel number of circular aperture is presented and the validity of usual fresnel number formula is reexamined. by using the analytical formula and diffraction integral formula, some numerical simulation comparisons are done, and it is shown that the results of the two methods are completely coincident

    用亥姆霍茲-基爾霍夫積分定和基爾霍夫邊界條件,推導出了平面波經小圓孔非傍軸衍射時軸上強度的簡單解析,研究了平面波經小圓孔后整個衍射空間非傍軸的軸上光強分佈.給出了計算圓孔菲涅爾數的精確公,重新檢查了通常的菲涅爾數公效性.數值計算顯示,應用解析所得的結果與應用衍射積分公所得的結果完全一致
  12. Furthermore, the supposition of galvanic couple is drawn into the procedure of corrosion fatigue crack growth of aluminum alloys, the relation of couple current vs loading time is determined with electrochemical methods. a formula in the theory is deduced which expresses the stress corrosion crack growth rate of lc4cs aluminum alloy, the results of mathematical modeling preferably correspond with examination

    再將「耦合作用」的猜想,引入鋁合金的腐蝕疲勞裂紋擴展過程中,用電化學的方法測定耦合電流與加載時間的關系,並從論上導出lc4cs鋁合金應力腐蝕裂紋擴展速率的數學,數學模擬的結果與實驗值具較好的一致性。
  13. A regular expression is also useful in a language, such as jscript or c that is not known for its string - handling ability

    正則在jscript或c等語言中也很用,這些語言的字元串處能力還不為人們所知。
  14. Based on the above theory and methods, the main works of this thesis are lasted as follows : starting from the propagation law of partial coherent light and beam coherence - polarization ( bcp ) matrix approach, the properties of pgsm beams through both an axis - symmetric paraxial optical abcd system and an axis - unsymmetric one are studied. the analytical propagation equations of pgsm beams are derived, which enable us to study the propagation - induced polarization changes and irradiance distributions of pgsm beams through an axis - symmetric paraxial optical abcd system and an axis - unsymmetric one

    在此基礎上,本文進行的主要工作:基於空間-時間域中互強度的傳輸論和bcp矩陣處方法,首次研究了pgsm光束通過對稱和非對稱abcd光學系統和光闌的傳輸變換特性,推導出了pgsm光束傳輸,可以對pgsm光束偏振和光強的傳輸變化進行分析。
  15. Jdl is an interpretative language system. it has data types, expression, control flow statements and user - defined function just like the imperative programming language, but also has data types and statements such as job control statements, task control statements, wait statement, parallel statement and monitor statements particular to jms

    Jdl是一種解釋型語言系統,既一般命令語言所具的數據類型、、控制流語句和用戶自定義函數等要素,也另作業管系統所特的數據類型、作業控制語句、任務控制語句、等待語句、并行語句和監聽語句等。
  16. Based on an analysis of fuze - warhead coordination, evaluation of the efficiency of fuze - warhead coordination is taken as made up of two parts : the design efficiency and the bursting model efficiency. their quantitative expressions are derived and their applications are discussed regarding the choice of fuze systems and the optimization of bursting models

    本文通過對引戰配合效率過程的分析,提出將評定引戰配合的效率指標分成明確物意義的兩個組成部分:引信設計效率和起爆控制效率,推導了它們的定量,並分析了它們在引信體制選擇和起爆控制模型優化設計等方面的應用。
  17. Based on vibration principle, the paper establishes dynamics analysis model of output shaft with elastic support, according to fourer series spread principle of periodic function, the dynamic response formula is derived by separating complex vibration force into sum of many simple harmonic excitation function of whole number times frequency relations. the result shows that response of both sides support is synchronous when load distribution non - uniform coefficient is 1

    依據振動論建立了具彈性支撐的輸出軸的動力學分析模型,根據周期函數的傅里葉級數展開原,將復雜的激振力分解成為多個頻率成整倍數關系的簡諧激勵函數,導出了動態響應,結果明,當載荷分配不均勻系數為1 . 0時的輸出軸兩端支撐同步。
  18. The computational expressions of rational shape functions are shown

    給出了多邊形上函數插值形函數的計算
  19. The power spectral densities which existed in the form of power law are used to determine the parameters of the power spectral densities in the rational form. the computer simulation for the models is also carried out

    對路面時域模型的建立,通常需要路面功率譜密度的函數的形,而國標中所推薦的功率譜密度為冪函數形
  20. For example, the geometric effect and vignetting are simulated with the synthetic method in which they are modeled with ray tracing and then simulated with pixel - based processing. the effects of detector noise on imaging are simulated with the three - dimension model. the theory of pixel transfer function is extended and developed, and microscanned images of four patterns are simulated with good results

    本文具如下幾個突出特點:用光線追跡法分析建模,而用基於象素處的綜合方法,模擬了光學系統中的幾何效應和漸暈現象;利用三維噪聲模型,模擬了探測器噪聲對圖像質量的影響;對象素傳遞函數論進行了擴展和延伸,給出四種工作模的微掃描成像系統的象素傳遞函數的具體數學,並利用這些模擬了探測器的空間效應和微掃描成像的圖像效果。
分享友人