種面積曲線 的英文怎麼說

中文拼音 [zhǒngmiànjīqūxiàn]
種面積曲線 英文
species area curve
  • 種 : 種名詞（姓氏） a surname
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 積 : Ⅰ動詞（積累） amass; store up; accumulate Ⅱ形容詞（長時間積累下來的） long standing; long pending...
  • 曲 : 曲名詞1 （一種韻文形式） qu a type of verse for singing which emerged in the southern song and ji...
  • 線 : 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...
  • 面積 : [數學] area
  • 曲線 : [數學] curve; bight; bought; profile; net曲線板 french curve; irregular curve; curve board; splin...
  1. The study investigated aboveground growths of caragana korshinskii and artemisia ordosica planted in four modes, revealing that in different planting modes their densities, heights and canopy width and biomasses remained unchanged or tended to decrease slightly ; the young shoots of a. ordosica annually grew in a s - shaped cure and the young shoots of c. korshinskii grew fast in spring and grew slowly or cease to grow from july on ; the biomasses and leaf area indexes of c. korshinskii and a. ordosica annually varied in a double peak curve and there were 8 annual plants that invaded in the four planting modes and formed higher coverage ; the quadrat with only a. ordoska appeared to have obviously lower coverage and biomass that the other three quadrats

    摘要對騰格里沙漠東南緣2種人工植被檸條和油篙在4種配置方式下地上部分的生長動態進行了研究，結果表明：不同配置方式下它們的密度、高度、冠幅和生物量基本不變或略微呈下降趨勢；油篙新梢的年生長動態呈s型曲線，檸條新梢春季生長速度較快， 7月份以後生長速度緩慢或基本停止生長；檸條、油篙地上生物量和葉面積指數的年變化均表現為雙峰型， 4種配置方式下共有8種1年生植物人侵，並具有較高的植被蓋度；同其它3個樣地相比，純油篙樣地1年生植物的密度、蓋度和生物量明顯偏低。
  2. Firstly, aggregate particles of various sizes were generated for a given aggregate gradation curve and aggregate area fraction

    首先，按照骨料級配曲線和面積百分比，生成各種尺寸的骨料顆粒。
  3. 4. with visco - elastic boundary of soil considered, the eigenvalue equation in frequency domain of soil dynamic equilibrium equation falls into a complex transcendental equation. in course of seeking its solution, based on argument principle and contour integral, with the aid of matlab, two numerical algorithm combined with the corresponding procedures for solving transcendental equations in a complex plane is developed by the author

    4 、由於考慮了土體的粘彈性支承邊界條件，使得其動力平衡方程在頻域內的固有值方程為一復數超越方程，為了求解該方程，筆者基於幅角原理和閉合曲線積分，結合matlab ，提出了復平面上超越方程的兩種數值解法，並編制了相應的程序。
  4. Determination method of the damage threshold stress and damage threshold strain is given, six kinds of damage variables ( which are across isotropy effectual elastic modulus damage variable, simple effectual elastic modulus damage variable, density damage variable, volume damage variable, volume density damage variable and area density damage variable ) are defined, evolution curves and evolution equations of harden yield damage are obtained

    提出了損傷應力和應變門檻值的確定方法，並定義了六種損傷變量（即橫觀各向同性有效彈性模量損傷變量，簡單有效彈性模量損傷變量，密度損傷變量，體積損傷變量，體積密度損傷變量和面積密度損傷變量） ，在此基礎上得出了硬化屈服損傷過程中的損傷演化曲線和演化方程。
  5. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。
  6. Two methods are given. one is obtained by using degree reduction of interval rational bezier curves in two parameter directions according to the character of tensor product, which is called " single step method ". by comparison for degree reductions produced by the different order in two parameter directions, the relationships of the approximation results are discussed

    然後討論了矩形域上區間有理bezier曲面的降階問題，給出兩種降階演算法：一個是針對張量積的特點將問題轉變為兩參數方向的區間有理曲線的降階逼近，即「單步法」 ，並討論單步法沿兩參數方向不同次序降階的關系。
  7. Regarding the estimated performance of classifier at high specificities ( > 80 % ) in control eyes as measured by the partial area under the receiver - operating characteristic curve, the combination of both instruments is also superior to the individual instruments

    以受試者工作特徵曲線下部分面積作為對照眼高專屬性（ > 80 % ）的分類性能評價，兩種儀器聯合篩查也優于單一儀器篩查。
  8. The theoretical results showed that point spread function ’ s distribution and the stray light mainly influenced the space resolving power and the measurement precision of the temperature measurement system, so we supposed some methods, which can improve the space resolving power, and the results proved the space resolution improved from 37 m to 16 m. 2. having made the space resolution come to 16 m, in order to improve the space resolving power more, we used image reconstruction method to reconstruct the

    利用這兩種方法，可以將測得的溫度場分佈中被點擴展函數卷積鈍化掉的部分復原回來，實驗測得微小面元溫度分佈在復原后溫度最高值高於復原前最高值，且分佈曲線變窄，較好地提高了系統的空間分辨能力，最終得到真實溫度分佈的最佳估計。
  9. The following algorithms have been proposed and tested in the thesis : 1 frequency selective fading : combine the isomorphism between the input space and the output space and propose a new approach to blind equalization of the channel. compared with conventional methods, the new approach offers lower computational complexity, better performance, and more robust against the over - determination of the system order ; 2 time selective fading : a new approach to the equalization of time selective channel based on the zero - forced equalizer is proposed which is more simple in its structure of algorithm ; 3 time - varying channel : using the instantaneous mean value changes of the output signal to extract the information of channel variations and model it using ar model, kalman filter is then employed to track channel variations, it bears faster ability in tracking the variation of tv channels ; based on the isomorphism between the inputs and the outputs and some of the approaches using in mimo system, a new algorithm of equalization of simo time - varying channel is proposed, which also share the merits of being robust against the over - determination of the system order ; model the time - varying channel using the multi - resolution decomposition wavelets, and then a blind identification method based " on the model is proposed ; at last, a new model for equalization and identification of mimo system is proposed

    主要工作在以下幾個方面： 1 、針對頻率選擇性衰落通道：結合輸入輸出空間同構關系提出一種新的頻率選擇性通道均衡方法，與傳統方法相比，該方法計算量更小，收斂速度更快，性能更優，且對系統階次的過確定表現穩健，具有實際均衡應用價值； 2 、針對時間選擇性衰落通道：提出一種基於迫零均衡的時間選擇性通道均衡方法，演算法結構簡單； 3 、針對時變色散通道：利用瞬態均值曲線提取通道時變信息，對之ar建模，利用卡爾曼濾波器跟蹤時變通道抽頭變化，可以快速跟蹤通道變化；基於輸入輸出空間之間的同構關系以及多輸入多輸出系統的處理方法，提出了新的單輸入多輸出色散時變通道均衡與識別演算法，同樣具有對通道階次過確定保持穩健的優點；結合小波多解析度分析提出一種基於小波模型的通道盲識別演算法；研究時變的多輸入多輸出系統的盲均衡與盲反卷積問題，給出一種時變系統處理模型。
  10. Under this flow, the convex initial curve will preserve its perimeter, enlarge the enclosed area and make its curvature to be positive definitely. and as the time lasts, it will become more and more circular, and finally, as the time goes to infinity, the curve will converge to a circle in the hausdorff metric

    本文證明在這種新的曲線流之下，閉凸曲線周長保持不變、所圍區域的面積不斷增大而曲率保持恆正（從而保持凸性） ，並且，隨著時間的推移曲線變得越來越圓，最終當時間t趨向于無窮大時，曲線在hausdorff度量意義下收斂到一個圓周。
  11. Based on the synthetic research of field outcrops, drilling section, well log and office compilation, combined with analyses of geological background, lithological association, sedimentary structure and palaeobiological character, the researched area in the chang6 - 8 oil - beds of triassic yanchang formation can be divided into deltas, braided deltas, fan deltas and lakes etc. four kinds of sedimentary facies

    在野外露頭、鉆井剖面及測井曲線的綜合研究和室內編圖基礎上，綜合地質背景、巖性組合、沉積構造及古生物特徵，研究區三疊系延長組長6 ? 8油層組被劃分為三角洲、辮狀河三角洲、扇三角洲及湖泊等4種沉積相類型。
  12. Based on the synthetic research of field outcrops, drilling section, well log and office compilation, combined with analyses of geological background, lithological association, sedimentary texture, sedimentary structure, geochemical and palaeobiological features, the researched area in the palaeozoic can be divided into deltas, braided deltas, lacus, barrier coast, continental shelf and carbonate platform etc. six kinds of sedimentary facies

    在野外露頭、鉆井剖面及測井曲線的綜合研究和室內編圖基礎上，綜合地質背景、巖性組合、沉積結構、沉積構造、地球化學及古生物學特徵，研究區古生界被劃分為三角洲、辮狀河三角洲、湖泊、障壁海岸、陸棚及碳酸鹽臺地等6種沉積相類型。
  13. It has a total sea area of about 1, 650 km2 and its indented coastline is about 800 kmlong. in the west, hong kong is located near the pearl river estuary - while in the east hong kong faces the open ocean of the south china sea

    香港位於中國南岸，海域總面積約為1 ， 650平方公里，曲折的海岸線長約800公里。香港西面毗鄰珠江三角洲，東臨遼闊的南中國海。香港海洋生物分佈廣泛，品種頗多樣化。
  14. Abstract : a new algorithm of area filling of geometry graph has been proposed. in this algonthm based on the area calculating theory of closed graph with curvilinear integral. the redundant judgement of inner pixels in the area has been eliminated and the defect of polygon area filling algorithm, which has some limitations to the graph shape, has also been overcome

    文摘:基於曲線積分求封閉圖形區域面積的基本原理，提出了一種新的幾何圖形區域填充演算法.該演算法不需要對區域內點進行重復判斷，也克服了多邊形填充演算法對區域形狀有一定要求的缺點
  15. This method makes curve ( surface ) integral more simple and convenient, at same time, it has advantage of avoiding mistakes in integrating by missing symbol

    這種積分方法使得曲線（面）積分更為簡便、快捷，同時，也有利於避免因符號處理不當而導致的積分錯誤。
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