理想曲線 的英文怎麼說
中文拼音 [lǐxiǎngqūxiàn]
理想曲線
英文
ideal curve- 理 : 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...
- 想 : 動詞1 (思索) think; ponder 2 (推測; 認為) suppose; reckon; consider; think 3 (希望; 打算) w...
- 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...
- 理想 : ideal
- 曲線 : [數學] curve; bight; bought; profile; net曲線板 french curve; irregular curve; curve board; splin...
-
For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field
因此,對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此,本文從測井地質的角度,針對當前裂縫性儲層測井地質解釋與評價的現狀,在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上,利用分形分維方法和技術,通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ ( fa )與m指數的理論推導,根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜,則其分維值d _ ( fa )越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵,提出了改進的基於盒維數的測井曲線網格覆蓋法,編程計算了裂縫性儲層段常規測井曲線(如聲波和電阻率曲線)上分形分維值及其m指數值,進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究,效果十分理想: 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪,採用儲層分維值分類技術統計分析這些參數變化的規律,並結合qx油田l區塊儲層類型經驗判別圖版,從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。This stress appears to move the curves toward the ideal, more equitable.
這種壓力使曲線趨向于理想的、較為合理的狀態。Based on the analysis of the current lift velocity curve, sine curve was used as the ideal velocity curve of the system
文中還在對各種電梯運行曲線進行分析比較的基礎上,把正弦曲線作為adcm的理想速度曲線。The first one is based on approximating the measured vapor pressure decrease by least square method, then inserting this approximation into the ideal gas equation to get ammonia absorption rate
一種方法是基於理想氣體方程。首先,對實驗中測量到的壓力降曲線用最小二乘法進行處理,將處理后的數據代入理想氣體方程,從而求得氨蒸汽的吸收量。A nearly ideal solution like benzene-toluene shows a vapor-pressure curve that conforms very closely to the plot.
象苯一甲苯那樣的接近理想溶液,其蒸氣壓曲線與此圖板極為吻合。The author choosed weighting matrix for different sea conditions, designed the controller and the rudder / fin joint control system. finally, the author simulated the controller with matlab. according to the simulation curves and data, we could find that the controller designed using state feedback control theory has nice control performance on rearing and rolling, but the control performance on pitching is not very good
為不同的海情選取了加權陣,求出控制器,完成了船舶舵鰭聯合控制系統的設計工作最後,用matlab語言對控制器進行模擬,從模擬曲線和模擬數據可以看出,使用狀態反饋h ~控制理論設計出來的控制器對艏搖與橫搖有較好的控制效果,而對橫蕩控制效果不理想,基本達到控制目的。The optimized speed curve can bring a steady press - down dimension in the process of the ring rolling which could assure high quality products
優化后的芯輥進給速度曲線能保證輾擴過程中始終有理想的每轉壓下量,從而降低缺陷的發生,提高零件質量。Its accomplishment is simple and intuitional. the main innovation of this method is that we only need construct a symmetric zonal mesh for each interpolated curve respectively and write appropriate knot spacings for mesh edges. then applying nurcc rules to the initial control polygonal mesh consisting of those symmetric zonal meshes can generate a surface that satisfies interpolation constrains
該方法的主要創新思想是在被插值曲線的控制多邊形兩側構造具有簡單對稱性質的四邊形網格,稱為對稱網格帶,但關鍵還在於對網格邊賦予適當的節點距,並對由這些對稱網格帶組成的初始控制網格應用非均勻有理catmull一clark細分規則,來生成滿足插值要求的曲面Then the paper uses the same typical four network operating conditions as the primary given conditions and when adding one set of the parallel capacitor bank, changing the 330 / 220kv transformer tap changer position step by step to change the transformer ration, through this study methods this paper found out all the optimized combination of the tap changer position and the amount of input reactive power, also obtained four sets of the 330kv, 220kv and hokv s / s bus voltage and the active and reactive power losses changing curves. through analyzing the optimized combination control curve and the network power flow, the paper generalizes the rules as following : the chief measure of coordinative control is inputting shunt reactor in chengxian s / s in winter time both in the planning year of 2010 & 2005 ; in summer time in planning year of 2010 the chief measure is to input proper shunt capacitor
本研究通過分析所獲得的最優綜合控制組合曲線及電網潮流,總結出了如下規則:隴南電網在2005年及2010年冬大、以及2005年夏小運行方式下,綜合控制應以成縣變投入適量並聯補償電抗器作為主要措施;在2010年夏小運行方式下則投入適量並聯補償電容器作為主要措施,再輔助以選擇合適的主變有載調壓分接頭來調節,達到控制網內無功潮流分佈合理、各變電站母線電壓在理想的范圍內時電網有功損耗最小,從而也提高了電網安全運行水平及供電質量。First, the fundamental theory of the basic fdtd method and its application in the analysis of the electromagnetic properties of infinite planar periodic structures is summarized. the basic ideas of the auxiliary fields fdtd method is expressed and generalized to the situations of the 2 - d periodic structures, to lossy media, and to the curvilinear coordinate. the shortcoming of this method in the management of conformal grids is pointed out
首先總結了fdtd方法的基本理論及其在周期性結構電磁特性分析中的應用,闡述了輔助場fdtd方法的基本思想,把它推廣到二維周期性的情況和計算區域為有耗媒質的情況,再進一步推廣到曲線坐標系中,並指出了該方法在網格共形處理中的不利之處。Expressions in three kinds of perfectly matched layer ( pml ) absorbing boundary conditions is also given. second, the numerical theories of the auxiliary fields fdtd method is studied, including the stability of the differential equations and the numerical dispersive relationship. the stability of two kinds of differential formulations and three kinds of pml is compared, using a straight method depending on the pmax - t graph
更進一步,研究了輔助場fdtd方法的數值理論,對其微分方程、差代方程的穩定性進行了分析,比較了有耗媒質中的兩種差分格式和三種理想匹配層中的差分格式的穩定性,提出了一種通過p _ ( max ) - t曲線判定穩定性並求出穩定性條件的直觀方法,並導出了該方法的色散關系式。The above idea is also applied to rational curves and an algorithm for offset approximation of rational bezier curves is presented
並將以上的思想應用於有理曲線,給出了有理b zier曲線的等距逼近演算法In the higher velocity, especially in the critical velocity, the continuous model is invalidity. 2, in this paper, assume that the track and wheels are ideally smooth and no carriage or wheel - axle bending vibrations occur. invoke the basic hypothesis of the bernoulli - euler theory of beams : namely, that plane cross - sections initially perpendicular to the axis during bending
2 、在對連續性模型的分析基礎上,假設軌道與車輪為理想光滑的、沒有車輛和輪軸激起的振動,引用bernoulli - euler梁理論的假設:即垂直於梁軸線的橫截面在彎曲過程中仍然垂直於梁的中性軸。When submarine curves close the water surface, the course is affected by the quasi white noise disturbances. the close water control structure is same with that in deep water. the simulations show that the control effects are close to the ideal situations
由於在近水面航行時,航向所受到的主要是接近於白噪聲的干擾,所以採用了結構和水下相同的航向自動舵,由模擬曲線可看出控制效果比較理想。6 brodlie k w ed. a review of methods for curve and function drawing. mathematical methods in computer graphics and design, london, uk : academic press, 1980, pp. 1 - 37
結果表明,新方法選取的節點構造的曲線具有數據點建議的理想形狀,而其他三種方法分別對某些數據不能給出令人滿意的結果。The airtight - combined hydro cylinder makes the rubber inosculate with soles firmly and the shape of the sides to reach an average pressure, firm joint and no space effect
本機採用密排式組合油缸設計,使橡膠塊能很好地吻合鞋底,鞋邊之曲線形狀,產生壓力均等、貼合好,不留間隙死角之理想效果。3. bring forward a new idea : the ideology of synergetics used in atomic simulation and multi - scale simulation of materials design. on the basis of this, next tasks were put forward : ( 1 ) analyzing the changes of stress - strain curves of the interphase before and after pre - treatment ; ( 2 ) the efficient of the coupling effect of o2, na2s04 and h2o stream on the oxidation and erosion resistance of interphase ; ( 3 ) the methods of improving environment performance of interphase above 1273k
提出將協同學的思想用於原子級模擬及跨尺度模擬的思路,並在此基礎上,提出下一步的工作設想: ( 1 )分析熱處理前後界面相區域應力-應變曲線的變化; ( 2 )航空發動機模擬環境中,氧、硫酸鈉蒸汽及水蒸汽耦合效應對界面相抗氧化性、抗腐蝕性的影響; ( 3 ) 1273k以上界面相環境性能提高的方法。Based on a number of charging and discharging experiments, a thought is put forward that the polarization may be detected according to the terminal voltages at charging, terminal voltage at the short pause, and the soc ( state of charge ) ; the depolarization by momentary discharge according to the reference of optimal curve
在論文撰寫過程中,作者主要進行了如下方面的研究: -對鉛酸蓄電池的電化學機理進行充分研究,並在大量充放電實驗的基礎上,提出了依據蓄電池充電時和停充瞬間的端電壓和蓄電池荷電狀態檢測蓄電池極化狀況的思想。 -依據最佳曲線給定,採取瞬間放電減少極化。And classic pid control method and numerical pid control method have been introduced in the paper. the paper adopt stabilization border method to set the pid parameters and simulates the control system which is based on matlab / simulink. simulation results indicate that pid control ’ s simulation results have a good effect in low - frequency stage, but it is not perfect in mid - frequency and high - frequency stage
採用穩定邊界法實現對pid參數的整定,並基於matlab / simulink對控制系統進行了模擬,模擬結果表明:低頻段pid控制正弦跟蹤曲線取得了良好的效果,而在中頻和高頻段時的跟蹤效果不是很好, pid控制的階躍響應超調量較大, pid控制三角波曲線的高頻性能也不理想。A line created from the risk - reward graph, comprised of optimal portfolios
一種線條由風險回報曲線圖創建,包括最理想的投資組合。分享友人