數概念 的英文怎麼說

中文拼音 [shǔgàiniàn]
數概念 英文
number concept
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 概 : Ⅰ名詞1 （大略） general outline 2 （神氣） manner of carrying and conducting oneself; deportment ...
  • 念 : Ⅰ動詞1 （看著文字發出聲音; 讀） read aloud 2 （上學） study; attend school 3 （想念; 考慮） think...
  • 概念 : concept; conception; notion; idea
  1. The lumping scheme and reaction network of this model largely decrease the complexity of model and demand for detailed component analysis, so it is easy to apply this model to the commercial units. the catalyst coking model with average activation function of catalyst is presented

    深入探討了重整催化劑的結焦失活機理，首次提出了連續重整裝置催化劑失活的平均活性函數概念，給出了催化劑結焦失活模型。
  2. A brief talk in teaching inverse trigonometric function

    淺談反三角函數概念的教學
  3. At last, we correct several mistakes in a paper written by pinar dundar. in chapter 3, the concept of vertex - neighbor - scattering number of graphs is introduced, and the values of vertex - neighbor - scattering number of some simple graphs are given

    第三章引入圖的鄰域離散數概念，給出幾類基本圖的鄰域離散數值，並就樹的鄰域離散數進行較為深入的研究。
  4. Then an approach was put forward to evaluate the potential risk of thermal runaway in exothermic reaction system by use of system safety index, and the equilibrium region of exothermic reaction systems was analyzed

    提出用系統安全指數概念來評價放熱反應系統發生熱爆炸的潛在危險性，分析化學放熱系統的平衡域。
  5. According to order relations defined between interval numbers, a fuzzy evaluation function is introduced into a multiobjective programming problem, this method results in the conversion of the complex multiobjective programming into the single objective programming

    摘要對系數為區間數的多目標線性規劃規劃問題，在區間數序關系下提出了序關系評價函數概念，並給出了一個命題，用此方法可將復雜的多目標線性規劃為簡單的單目標規劃。
  6. In the general design and analysis methods for problems of the breakwater stability, the concept of compositive safety factors is used usually. however, floodwater, storm wave and beach erosion as well as properties of soil medium are always random, which may have uncertainties

    在防浪堤壩的設計中，傳統的安全性能分析方法採用綜合的安全系數概念，但洪水、風浪、河道沖刷、土力學特性等因子都是隨機性的，具有一定的不確定性。
  7. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  8. First of all, i summarize the forecast model category and estimate each model in detail, then, i adopt different model to forecast demand, supply, bdi of bulk shipping market. as to demand forecast, i mainly focus on the imitating precision of primitive data, adopt grey forecast model, self - suited filter model separately, and then compose these models as a better one. as to supply forecast, i use econometrics model to describe the complicated relationship of demand, supply, bdi, gnp etc. as to bdi, i try to draw into market integrated factor, describe the relationship of bdi, supply, capacity, speed, rate of oil, navigating capital etc. then finally, i make afterwards evaluation of these models and then analyze future bulk shipping market in detail

    對于需求預測，著重考慮對原始數據的擬合精度，經過模型比較優選論證，分別採用了灰色一階模型，改進的灰色二階、自適應過濾預測的加權組合模型，得到了相當高的擬合精度；對于供給預測，運用計量經濟模型對供給、需求、運價、 gnp 、進出口貿易額等多變量之間復雜的相互關系進行動態模擬，定量的反映出各變量之間的因果關系；對于運價預測，嘗試引入市場綜合因數概念，化繁為簡，通過描述運價與運力供給、載重噸、油耗、航速、燃油價格、航行成本等等諸多因素的關系來進行預測。
  9. Groen, g. & resnick, l. b. ( 1977 ). can preschool children invent addition algorithms ? joural of education psychology, 69, 645 - 652

    劉范， 《中國現時的發展心理學? ?兼談中國3 ? 12歲兒童數概念和運算能力發展的初步研究》 ， 《心理學報》 ， 1981年第2期。
  10. Based on the fractal geometry theory, this paper constructed the fractal geometry of road network, and applied the hausdorff dimension to the overall evaluation of road network

    摘要基於分形幾何學理論，構建了公路網的分維數概念，並將其應用於公路網規劃整體性評價。
  11. In the second chapter, the concept of value multiple is introduced in details and a new valuation model is given at the end of this chapter. an important conclusion is drown through data analysis in american capital market in the chapter three : there is a strong relativity between the value multiple and the stock price. in the next chapter, we analyze those factors that they can weaken the effect of value multiple when we use it to judge the intrinsic value of securities in our country and countermeasures ^ against those factors

    本文第一章主要就證券價值分析的一般原理、常用方法以及存在的問題進行了探討；第二章主要就價值倍數法的理論基礎、計算公式進行闡述和推導，並最終構建了基於價值倍數概念上的估值模型；第三章主要通過美國資本市場的數據對價值倍數與股票價格之間的關系進行了探討，最後得出二者之間為正相關的結論；第四章主要就我國證券市場上影響價值倍數運用的主要因素以及對策進行探討，並通過實例演示證明價值倍數模型在我國證券市場運用的有效性；第五章對整個研究過程進行了總結，並就其中存在的問題提出了改進的思路以及進一步研究的方向。
  12. After teaching the chapter of function, we once did a questionaire to the first grade senior student in high school, the analysis result show that the student have n ' t had deep understand to the concept of function, in their mind, there exists prior knowledge, which keep them away from the practical - questions with function concept well, there is still some distance between their realization of concept and convey of the conceptual symbols

    在學習函數這一章節后，我們曾對高一年級學生進行了一次問卷調查，調查結果發現，學生對函數概念理解不夠深刻，明顯存在「先驗知識」 ，不能很好地運用函數概念解決實際問題，在對概念的認識與概念符號表達上存在一定的距離。
  13. The function concept is the main study in the modem mathematics, it ' s also one of the most difficult concepts for students to understand

    函數概念是現代數學中心問題，同時又是學生感覺最困難的概念之一。
  14. It also analyze design and evaluate structures durability. in face of durability evaluation, it modify concept of durability coefficient and give suggested formula, then divide durability evaluation class accord of it again, and in order to apply it more reasonable, we soften reliability index apply fuzzy theory

    在耐久性評估方面，修正了現行標準的耐久性系數概念，給出相應公式，重新劃分了耐久性評定等級的指標分界，並應用模糊數學方法軟化指標分界，使應用更加合理。
  15. Study on the development of function concept for junior high school students

    初中生函數概念發展的研究
  16. The dynamic model of grey is comeing or bring into being the function concept with the grey serving as the foundation, and with the differential drawing up closing the pattern the building method for the nucleus, to build pattern thought is directly changing the time alignment to the differential equation grey system, thus builds that the development abstracting the system changes the dynamic model, and namely grey ' s dynamic ' s model, ' s brief note is for gm

    灰色系統理論與方法的核心是灰色動態模型，其特點是生成函數和灰色微分方程。灰色動態模型是以灰色生成函數概念為基礎，以微分擬合為核心的建模方法，灰色系統建模思想是直接將時間序列轉化為微分方程，從而建立抽象系統的發展變化動態模型，即greydynamicmodel ，簡記為gm 。
  17. Investigation on students ' cognitive development of function concept

    中學生函數概念認知發展研究
  18. Since sontag - type control based on control lyapunov function is an important control law in robust stabilization of affine systems, we point out that is a kind of variable structural control in essence. due to this recognition and the fact that control lyapunov functions are difficult to be constructed, we propose the concept of weak control lyapunov function and then prove the stabilizing property and the robustness of sontag - type control. using the way of proposing the control lyapunov function and the special structure of sontag - type control, we investigate the dissipassivation control of a kind of perturbed nonlinear systems

    基於控制李雅普諾夫函數的sontag - type控制，是仿射系統魯棒鎮定研究中一種非常重要的控制律，通過研究我們發現，該控制律實質上是一種變結構控制；基於這一認識，也考慮到控制李雅普諾夫函數難于構造，我們抽象出弱控制李雅普諾夫函數概念，並證明了基於弱控制李雅普諾夫函數的sontag - type控制的鎮定作用和優化特性；借鑒控制李雅普諾夫函數的抽象方式以及sontag - type控制的特殊結構，探討了一類受擾系統的耗散化控制；探討了齊性度理論與控制李雅普諾夫函數相結合的鎮定設計問題。
  19. The second chapter summarizes the mathematic concept ' s meaning and traits, explores a little understanding of mathematic concept ' s process teaching, and expounds the advantages of it by the examples of " the understanding of angle " and " the teaching of contrafunctional concept "

    第二章簡述了數學概念的含義及特徵，探討了對數學概念進行過程教學的幾點認識，並以「角的認識」 、 「反函數概念的教學」為例，分析、評述了對概念進行過程教學的長處。
  20. Zero - value coefficients about interaction of water and temperature is put forward, zerovalue phenomenon about interaction of water and temperature and energy character that moisture vaporizes, ammonia volatilizes, millet seeding grows and it absorbs nitrogen are brought to light

    在所研究各種體系水熱耦合效應基礎上，提出了水熱效應零值參數概念，揭示了水熱耦合效應零值現象及水熱耦合作用下土壤水分蒸發，肥料氮揮發和穀苗生長及氮素吸收的能量特徵。
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