極小曲面 的英文怎麼說

中文拼音 [jíxiǎoqūmiàn]
極小曲面 英文
minimal surface
  • 極 : i 名詞1 （頂點; 盡頭） the utmost point; extreme 2 （地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • 小 : Ⅰ形容詞1 （體積、面積、數量、強度等不大） small; little; petty; minor 2 （年紀小的; 年幼的） youn...
  • 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...
  • 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...
  1. In acid copper sulphate solution, the nc copper has a more negative corrosion potential which is decreasing with reducing the grain size and diffusion impedance was only found in the as - prepared and as - annealed at 180 ? nc copper due to the diffusion within the pores and channels on the surface. both the tafel plots and eis study demonstrated that the nc copper exhibits a higher corrosion current and lower polarization resistance than its mc couterpart

    在酸性硫酸銅溶液中，納米晶銅的腐蝕電位比微米晶銅要負，並且隨著晶粒尺寸的減小而降低。 eis研究表明，未退火的和180退火的納米樣品中發現了擴散阻抗，與表面孔洞和通道中的擴散有關。極化曲線外推法和電化學阻抗研究都表明納米晶銅的腐蝕電流比微米晶銅高，而極化電阻要低。
  2. All analysis and simulations results indicate several methods improving the insulation recovery of spark gap switch : ( 1 ) using the gas with good thermal conductivity, such as h2 and sf6 ; ( 2 ) using the gas flow ; ( 3 ) utilizing the v / p cure ; ( 4 ) modifying the geometry and size of the electrode ; ( 5 ) using the gas with good electronegativity, such as sf6. some experiments on the multi - pulse operation of high power spark gap switch are carried out. the insulation recoveries of switch without and with gas flow are both investigated

    結合理論分析和模擬結果，提出了氣體火花開關多脈沖運行特性可採用如下方法: （ 1 ）使用導熱性能好的氣體，如h2 、 sf6等; （ 2 ）採用吹氣的方法; （ 3 ）增大氣壓，在電極表面增加細小結構，構造平穩的v / p曲線; （ 4 ）改良開關電極結構和尺寸，採用奶頭-半球結構的電極; （ 5 ）使用電負性強的氣體作為開關絕緣氣體，如sf6 。
  3. Presently the hide - and - seek frolicking began, and tom and becky engaged in it with zeal until the exertion began to grow a trifle wearisome ; then they wandered down a sinuous avenue holding their candles aloft and reading the tangled web - work of names, dates, post - office addresses, and mottoes with which the rocky walls had been frescoed in candle - smoke

    在這之後，他們開始玩捉迷藏游戲，玩得極其投入，一直玩到都有點厭煩了為止然後他倆高舉蠟燭，順著一條彎曲的小路往前逛，邊走邊念著用蠟燭煙油刻寫在石壁上面的名字年月通訊地址和格言之類的東西。
  4. The results indicate that arctic fox wool, the angolan rabbit hair, the hair of nyctereutes ussurienusis mstscie with medulla cavity ' s density and breaking strength are small, but the angolan rabbit hair ' s superficial curl number is less ; the density of shanxi shep camel ' s hair is equal to wool and cashmere, the breaking strength and breaking elongation ratio are bigger than others

    結果表明，有髓腔的北極狐毛、安哥拉兔毛、貉毛的密度和斷裂強度均較小，但安哥拉兔毛的表面捲曲數少；山西羊駝毛的密度與羊毛、羊絨相當，強力和斷裂伸長率較大，產品耐磨性較好。
  5. Simple genetic algorithm gets local minimization too easily and converges slowly. to solve these problems, adaptive crossover rate that has reverse hyperbolic rel ation with the numbers of iteration is designed, and adaptive mutation rate that has reverse proportion to the distances of parents and reverse exponential relat ion to the numbers of iteration is put forward. the practical simulation results show that the adaptive ga has greater convergence speed and larger probability o f getting the best solution

    簡單遺傳演算法存在著收斂速度慢、易陷入局部極小等缺陷.針對這些缺陷，本文設計出隨相對遺傳代數呈雙曲線下降的自適應交換率，並提出與父串間的相對歐氏距離成反比、隨相對遺傳代數指數下降的自適應變異率.實例驗證表明，具有自適應交換率和變異率的遺傳演算法在收斂速度和獲得全局最優解的概率兩個方面都有很大的提高
  6. Only clouds of points instead of grids are distributed over the computational domain and the spatial derivatives of the considered partial equations are estimated using a least - square curve fit on local clouds of points

    與傳統的網格方法不同，無網格方法的核心是用「點雲」離散求解區域，並基於當地點雲離散結構，引入二次極小曲面逼近空間導數。
  7. In recent years, luzhou - flavor liquor distilleries in north china had actively practiced lots of methods to improve liquor quality as follows : improving the quality of fermenting pits, strengthening pits maintenance, popularizing the production of compounding flavor - producing daqu and the application of intensified daqu, popularizing the building of small - size fermenting pits, paying stress on technical operation and strengthening technical management, improving the tasting and blending level of product liquor, further studying the stability of north china luzhou - flavor liquor, and carrying out the research on the application of biotech and flavoring - producing technique outside pits etc

    摘要北方濃香型曲酒廠在提高濃香型曲酒質量方面採取了提高發酵窖池質量，加強窖池養護；推廣復合生香大?生產和強化大?的應用；推廣建立適宜小型發酵池及其應用；嚴格工藝操作規程和加強工藝管理；提高成品酒的品評、勻兌水平，加強濃香型曲酒穩定性研究；積極進行生物技術的應用和窖外產香工藝技術的試驗研究等措施，極大地推動了北方濃香型曲酒質量的提高。
  8. Due to their high aspect ratios and small tip radii of curvature, carbon nanotubes possess marvelous electron field emission properties, viz. low turn - on voltage ( e0 ) and large emission current density ( je ), and have good potential for using as materials in electron emitters of flat panel display

    由於奈米碳管具有極高的縱橫比與極小的尖端曲率半徑，因此奈米碳管有著超乎常態的電子場發射特性，低的場發射起始電壓與大的場發射電流密度，使其為電子場發射平面顯示器的良好材料。
  9. Based on the method of limitation analysis of soil plasticity, researching from the soil arching mechanism of soil - nailing retaining, the upper limit of the critical height of soil - nailing slopes and the minimum horizontal length from coping of the potential slide surface to the edge of deep excavation are obtained through the analysis to weight of soil and vertical loading and the mechanism of soil and soli - nailing acting reciprocally

    摘要基於土的塑性極限分析方法，以均質土坡為例，從土釘支護結構的準粘聚力理論出發，綜合考慮土體自重、坡頂的條形荷載，以及土釘與土體的相互作用的機理，推導出了土釘支護的臨界高度的上限值和潛在螺旋曲線滑動面在坡頂方向距基坑邊沿的最小水平距離解析表達式，可供基抗支護設計參考。
  10. The effect of different sizes of sections, modes and values of residual stresses are studied. through the analysis, the conclusion is arrived at that the universal slenderness ratio should be used to better correlate the stability of box section beams with the member length instead of the out - of - plane slenderness, and the stability coefficient is taken to be 1. 0 for practical used box girder. then, the elastic critical loads of box section beam - columns are obtained based on the gjelsvik theory, and the relationship between axis force p and moment m is given

    最後，運用ansys通用有限元程序的beam189單元，引入初彎曲和殘余應力的影響，用考慮幾何和材料雙重非線性的有限元求解格式求得箱形柱在不同軸力和彎矩比例作用下的彈塑性極限承載力，通過對十幾個不同截面尺寸構件在不同長細比下的承載力計算，發現在軸力p遠大於彎矩m時，構件將是平面外失穩控制，而當軸力p遠小於彎矩m時，構件則以平面內失穩為主。
  11. When the reinforcement is suitable, the yield state of member is similar, the ultimate state will change with the changes of p, fy and fc

    但上述岡素對截面極限曲率的影響很人，即關繫到構件截面的破壞形態（截面延性比的大小） 。
  12. Because the weight space formed by the bp neural network ' s global error function, which include extreme point, is a hyper - surface, considering the initial parameters of bp neural network ' s structure, so the bp neural network has a inherent deficiency of easily falling into local minimum

    由於bp神經網路的全局誤差函數構成的權值空間是包含多個極值點的超曲面，加之即網路訓練開始網路結構參數是隨機給定的，因而bp神經網路在學習訓練中容易陷入局部極小。
  13. The construction of minimal surfaces

    極小曲面的構造
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