極限線 的英文怎麼說

中文拼音 [jíxiànxiàn]
極限線 英文
limit line
  • 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...
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 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...
  • 極限 : 1 （最高的限度） the limit; the maximum; the ultimate limit; limitation; extremity; tipping point...
  1. Liang qi - chao believed that history is evolving constantly and the " evolution " is limitless ; it is progressive but has twists ; it is in a spiral ascendance rather than in a straight line

    摘要梁啟超認為歷史是「進化」的，它具有進步性和曲折性，呈無極限之螺旋狀而非直線上升。
  2. Based on the analysis of mechanism for joint region, the " frame - wall " and " aslope compression stub column " mechanical models and yielding patterns of core zone of the joints are set up. the shear load - carrying formulation for joint core zone is also given in terms of plastic ultimate analysis. and then, the comparisons between the formulas given in this paper and that of chinese design code ( draft ) and nonlinear fem as well are presented

    對節點核心區的抗剪，通過受力機理的分析，建立了鋼「框架剪力墻」加混凝土「斜壓短受力體系及其屈服機制，根據塑性極限分析，給出了節點核心區抗剪承載力計算的迭加公式， 《規程》公式和非線性有限元近似模擬分析結果進行了比較。
  3. A new method on seeking asymptote is given by applying the relation between secant and asymptote, this method is helpful to train creativity of students

    摘要利用曲線割線的極限得到曲線的漸近線，給出了求漸近線的一種新方法。這種方法直觀性強，有助於培養學生的創新能力。
  4. We compare the approximation of an analytic function f by its taylor polynomial and its poisson partial sum with the same number of terms and illustrate that for functions with limit zero at infinity and for bounded functions the poisson expansion provides a better approximation to the function than the taylor expansion

    在第三章中，介紹了rb曲線與poisson曲線的概念以及基本的幾何性質，指出了poisson基函數與有理bernstein基函數之間存在的關系，並且將解析函數的taylor逼近與poisson逼近進行比較。實例表明，對于在無窮遠處極限為0的函數以及有界函數， poisson逼近比taylor逼近效果要好。
  5. The current chinese foundation design code gbj7 - 89 use limit equilibrium theoiy with elastic soil stress distribution to give out bearing capacity design value calculating fonnula and use elastic soil model to evaluate foundation settlement. according to the above theories, code gbj7 - 89 gives the correlative terms. but these do not accord with the practical mechanism of loaded soil below the shallow foundation and the elastoplastic property of natural soil so defects exist

    我國現行規范gbj7 - 89將這兩者分開考慮，其計算地基承載力設計值的公式是根據彈性地基中應力分佈及土的極限平衡狀態理論為依據而得出的，求地基的沉降變形時則視土體為彈性，這些理論對地基及土的假設與淺基礎地基的實際工作狀態及天然土體的非線性、彈塑性存在一定的偏差。
  6. The results reveal that calculation errors can be reduced with the linear expending nodes, which can be found out by anti - inference method, decided on the limiting equilibration surface based on the advance losm method

    結果顯示，用改進一次二階矩法將線性展開點（可用反演算法求得）選在極限平衡狀態面上，可減小計算誤差。
  7. Output can be obtain, next we use our designed the wavelet soft threshold to select result of the wavelet transform, finally, we give the selected result reversal wavelet transform. it is obvious : the wavelet soft threshold is important to improve the quality of the gray image processing. i give the donoho wavelet soft threshold a modified value method, which has a relation with ratio of signal - noise. i made full use of discrete hop field single feedback neural network, and nonlinear steady of automatic system at last, i obtained a steady limited ring, give the energy function an order differential a optimal

    我的思路是：改造現有圖形結構，先建立能反映信噪比大小且含待定參數k的表達式，然後通過離散型h0pfi舊單層反饋神經網路，再結合前邊的混合濾波器構成一個非線性控制系統，寫出對應的網路函數，利用相平面法和李雅普諾大穩定性的判據，得到一個穩定的極限環，從而確定出參數卜的范圍，進而再對原來的小波軟閾值進行修正，用修正後的值作為小波閾值。
  8. Firstly, the status of our nation ' s water resources, flood and arid hazards is overviewed to illustrate the necessity for study on dynamic control of flood season limited water level. disadvantages in traditional limitsd water level design, static control of limited water level design, static control of limited water level and fuzzy limited water level curve are pointed out, and mending methods for these are introduced. dynamic control and its key problems are analyzed hi next section. the allowable range of limited water level is determined, so as the allowable extreme risk index. the definition of extreme risk is re - illustrated, risk analysis methods in reservoir operation is discussed either. according to the definition of extreme risk rate, the allowable extreme risk rate of reservoir is systematically demonstrated with variant extreme risk indexes and flood season limited water level

    本文首先闡述了我國水資源狀況和水旱災害、說明水庫汛期限制水位動態控制研究的必要性；介紹了傳統汛限水位設計、汛限水位靜態控制、模糊汛限水位過程線存在的問題及其初步改進方法；分析汛期限制水位動態控制的方法及關鍵問題；進一步闡述了水庫極限風險率的定義；根據極限風險率定義，詳細敘述了不同極限風險指標時、不同汛期限制水位下起調，水庫所能承受的極限風險率計算方法。然後，基於極限風險率計算方法，以白石水庫為背景，研究「考慮壩體自身安全、考慮壩體安全與下游防護對象控制下泄流量的汛限水位動態控制的極限風險率」 。
  9. The load displacement curves and the ultimate strength of each member are presented. effects of beam length, radius of curvature and flexural - torsional rigidity on ultimate are considered

    通過試驗研究，給出每個構件的荷載位移曲線和極限承載力，得到了曲梁承載力隨跨長、曲率半徑以及截面尺寸的變化規律。
  10. Based on the philosophy of capacity design, the formulas of overstrength of coupled - shear wall were established to offer the theoretical references for the evaluation on the seismic performances of the shear - wall structures designed by current building codes based on bearing capacity method under severe earthquake, which has been proved correct by the results of nonlinear full range analysis

    摘要基於能力設計原理，建立了聯肢剪力墻結構極限承載力的超強計算公式，為按現行規范以承載力設計的剪力墻結構評估其在罕遇地震下的抗震性能提供理論依據，並結合實際工程中剪力墻的計算和非線性分析結果，證明了本文方法的正確性。
  11. Facilitating the configuration of protocol parameters, optimization of protocol operations, and more exact estimation of protocol performance, etc. basing on combinatorial theory and asymptotic method, we analyzed the properties of manets with nodes uniformly distributed in rectangular region. mathematical formulas of some basic properties of manets are obtained, such as the expected number of wireless links, mean node degree, the relation between network connectivity and radio range

    因此本文第二章基於組合學方法和極限思想研究了矩形區域內節點均勻分佈的無線自組網的幾項基本屬性，網路中鏈路總數的期望值，網路中節點度數分佈情況，以及網路連通性與無線信號傳輸半徑的關系等，得出了其解析描述。
  12. When the width of reticle is less than 30nm, the semiconductor material achieves its physical limit, and it would be happen that quantum effect

    刻線寬度小於30nm時，半導體材料達到它的物理極限，就會發生量子效應。
  13. The thesis developed the optimization design software of geometric parameter for the worm gear including strength check module, the drawing contact lines module, the change lines of tooth thickness of worm, and the parametric modelling software for the reducer which includes parametric modelling of parts and assembly. the cad prototype system is very convenient because of its accessible interfere, simple operation and written in chinese. by input design parameters ， the cad system can make optimization design and strength check for the worm gear ， draw contact lines of tooth flank of worm - gear and change line of tooth thickness of worm ， judge if the tooth flanks of worm undercut and if the sideward tooth of worm - gear hob come to a point ， make project design and structure design for the reducer and draw its 2d parts and assembly

    研究和開發了平面二次包絡環面蝸桿傳動的參數優化設計和校核軟體系統：包括幾何參數設計計算模塊，強度校核模塊，繪制齒面接觸線模塊，蝸桿齒厚變化曲線模塊和蝸桿根切判別模塊；開發了平面二次包絡環面蝸桿減速器外形與結構尺寸數據庫以及傳動效率數據庫，建立了平面二次包絡環面蝸桿傳動公差及極限偏差數據庫；開發了平面二次包絡環面蝸桿減速器參數化建模軟體：包括零部件的參數化建模模塊和裝配圖的參數化建模模塊，其中零部件的參數化建模包括蝸桿軸系的參數化建模、蝸輪軸系的參數化建模、箱體的參數化建模、端蓋的參數化建模、軸承的參數化建模和其它零部件的參數化建模軟體模塊。
  14. Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account

    依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型，對中國古代木結構中的典型構造如：柱腳在礎石頂面平擱簡支、柱架榫卯連接、柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究： （一）通過木柱石礎靜摩擦試驗，測定了柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律； （二）通過單柱承載力試驗，測定了古建築中木柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量； （三）通過柱架低周反復荷載試驗，測定了柱架的抗側移剛度、柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、柱架及榫卯的極限承載力和極限變形、及榫卯減振參數； （四）通過斗?低周反復荷載試驗和受壓試驗，測定了古建築木構件與木構件間摩擦系數，斗?抗側移剛度，斗?恢復力特性及滯回曲線，斗?抗壓極限承載力及受力變形規律； （五）通過抬梁式殿堂間架模型振動臺試驗，測定了殿堂木構架結構自振周期，地震反應振形、阻尼特性及阻尼比；按結構分層特點對柱腳、柱頭和斗?層上的屋蓋的地震反應採用多點同步測量，對柱根滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。
  15. The present paper firstly represents the model about random walks in time - random environments on the right line, then the studies about recurrence - transience criteria and limit theorem by using some relative theories of markov chains, and finally a center limit theorem of this random walks in the non - recurrence case

    摘要給出了半直線上時間隨機環境下隨機游動的模型，並利用馬氏鏈理論研究了該隨機游動的常返暫留準則和依概率收斂的大數定律，得到在非常返情形下的中心極限定理。
  16. The study in the paper starts with beam distortions, and it treats the plastic deformation area as pure bending sect, rest of the beam as rigid bodies. according to different shapes of the external tendons, it divides into three structural forms familiar in projects, that is the beams with no deviator, with a deviator and with two deviators, and studies the relation between the deformation of the external prestressing tendons and that of the beams, and derives the formulas of the ultimate stress increment of external tendons. in the formulas, the ultimate angle corresponding to half of the plastic deformation area is considered as a variable parameter

    本文首先從梁極限狀態下的變形入手，將塑性鉸區看作純彎段，將塑性鉸以外的區域看作剛體，按照體外預應力筋的形狀不同，分工程中最常見的三種體外結構形式，即無轉向塊的直線型體外筋混凝土梁、具有一個轉向塊的單折線型梁和具有兩個轉向塊的雙折線型梁，研究體外預應力筋變形和梁體的變形間的關系，推導出以極限狀態下塑性鉸區之半對應的轉角為參數的計算體外預應力混凝土簡支梁以及連續梁的體外筋應力增量計算公式，並進一步求得梁的極限承載力。
  17. Here a low cost optimal position system with speed - loop open and position - loop closed based on fuzzy control is presented, it employs fuzzy controller to verdict rotor velocity approximately and a fuzzy switching curve is substituted for real one to achieve bang - bang switch, no limit - loop or oscillation occurs. at the end of this chapter, a dc break curve is discussed

    為了實現經濟實用的點對點快速定位系統，實際系統採用速度開環、位置閉環結構，速度量從模糊控制器得到，既不實測也不軟體估計，用模糊開關線代替真實開關線進行控制量狀態切換，無極限環或振蕩現象，而成本則大大降低。
  18. Abstract : in this paper, empirical euclidean likelihood ratio statistics are constructed for parametric components in a partly linear model, and its theory asymptotic confidence regions are constructed for parametric components in a partly linear model

    文摘:構造了部分線性模型參數的經驗歐氏似然比統計量，並討論了它的極限分佈，由此可構造部分線性模型參數的漸近置信域
  19. And in data processing module, the based work of data analyse and creep curves drawing, and the advanced work of creep limit and extrapolate results resolving can be achieved under many kinds of test condition

    數據處理部分可對各種試驗條件下的數據進行分析並繪制出各種蠕變曲線，進而得到蠕變極限及相應的外推結果。
  20. Limit of detection and limit of decision for nuclear radiation measurements ; measurement by use of linear analog ratemeters

    核輻射測量的檢測極限和決策極限.線性模擬計數速率測
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