極軛 的英文怎麼說
中文拼音 [jíè]
極軛
英文
pole hub-
A study on the zhongshan conjugate point location during auroral substorms
極光亞暴期間的南極中山站地磁共軛點位置研究Polyparaphenylenevinylene ( ppv ) has been paid attention to because of good photoelectric property and peculiar molecule framework ; fullenene have three - dimensional conjugated structure and diminutive electron binding energy, and its peculiar structure and property has interested photoelectric scientist. as an electronic acceptor, c60 can enhance the efficiency of organic photoelectric cells compounded with ppv. but the little solubility of c60 in common organic solvent limited its application, and processing measure need more researchment
聚對苯乙撐（ ppv ）具有優良的光電性能和特有的分子構架而倍受關注， c _ （ 60 ）具有三維共軛結構完美的對稱性和小的電子結合能，以其獨特的結構和性能引起了光電科學工作者的極大興趣，將c _ （ 60 ）作為電子受體與共軛聚合物ppv復合可以使有機光伏電池的效率提高。Also, the author ’ s design strategy and creativity has been given in this paper. specifically, it includes : based on the feasibility analysis of the fit selection of control parameters in the aeration process, the aeration process of wastewater treatment of the joint - constructional complete - mixed activated sludge process has been aimed at in this paper. then, the state equations of the aeration process have been proposed in this paper, which is on the base of dissolved oxygen concentration ( do ) and discharge quantity of sludge ( qw ) as control variables, the concentration of bod and sludge as state variables. based on the present study on optimization control of wastewater treatment, the multivariable optimal control model with restriction factor has been presented in the paper with introducing modern control theory and system analysis into the field of activated sludge wastewater treatment,
具體包括:以完全混合、表面曝氣合建式活性污泥工藝的污水處理曝氣過程為研究對象，在闡述了曝氣過程式控制制參數選取可行性的基礎上，建立了以溶解氧濃度do和活性污泥排放量qw為控制變量，以曝氣池中有機物濃度s和微生物濃度x為狀態變量的活性污泥曝氣過程的基本狀態方程;運用現代控制理論的觀點和污水處理理論，在現有關于污水處理最優控制問題研究的基礎上，建立了有約束條件多變量能耗最小數學模型，該數學模型是以有機物排放總量和狀態變量的末值條件作為約束條件，曝氣過程的能耗最小作為目標泛函;採用增廣拉格朗日乘子法對最優控制問題進行轉化，並對應用極大值原理求解能耗最小這一最優控制問題進行了詳細的解析;引入約束運算元，應用具有控制約束的共軛梯度演算法對能耗最小這一最優控制問題進行求解，並進行模擬實驗驗證。Abstract : we have studied the polarization beats spectroscopy with phase - conjugation geometry in a cascade three - level system. it was found that the accuracy for the energy - level difference measurement is determined by the homogeneous linewidths of the optical transitions. under the condition for the occurrence of beating, the frequency difference of the beat between two independent light sources could exceed the laser linewidth. the measurement accuracy for laser absolute frequency could reach the same order of magnitude as the laser linewidth
文摘:研究了級聯三能級系統中的相位共軛極化拍頻光譜術.發現其對能級差的測量精度決定於光學躍遷的均勻增寬.在符合拍頻條件時，兩獨立光源拍頻的頻差可以超出激光線寬，激光絕對頻率的測量精度可達到與激光線寬同一量級A full mathematical model of optimal flow pattern design withengineering constraints was put forward, based on modern optimal control theory. an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine. according to integral optimization of turbine stages, a full physical model and mathematical expression were put forward for proposition of optimal flow pattern, including all performance parameters in turbine stages. this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state, fixed terminal condition and constraints for part of state terminal variables. the program was also worked out according penalty function method and conjugate gradient method. the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function
把近代最優控制論方法引入軸流透平葉片的設計，在優化的軸流透平子午通道內，建立包括透平級內所有性能參量的最優流型命題的完整的物理模型及其數學表達式，並歸化為一個在給定初始狀態、自變量終端固定、部分狀態變量終端受有約束的條件下，使級的某一性能指標（如級的功率）達到最優的最優控制問題，應用「代價函數法」及「共軛梯度法」編制計算程序，計算得到符合給定約束條件、並使目標函數取極值的最優環量分佈，結果是令人滿意的。Steviol is completely absorbed and is excreted in the bile as conjugates ; only a very small fraction is detectable in urine
甜菊醇被完全吸收后，成為軛合物在汁中排出，只有極微的份量在尿液中檢出。As a kind of topological conjugate invariant, the topologic entropy can perfectly describe complex behavior of dynamical system. therefore it plays a very important role in the study of dynamical system
拓撲熵作為一種拓撲共軛不變量，它對動力系統的混亂程度有著極好的數量描述，因此在動力系統的研究中占據著十分重要的位置。You have not shown any mercy to them ; you have made your yoke very heavy upon the elderly
你毫不憐恤他們，把極重的軛加在老年人身上。Their molecule structures have strong electron conjugated systems and electron transition between organic ligands and center metal atoms, which result an enhancement of their nonlinear polarizabilities
它的結構中含有較強的電子共軛體系，並且有機配體與中心原子間的電子轉移，大大提高了其非線性極化率。Some results are the following : ( 1 ) letg be a finite group having two maximal subgroups that are solvable and not conjugate ing. if the maximal subgroups are weakly quasinormal ing, then g is solvable
本文主要獲得了下列結論： （ 1 ）若群g有兩個不共軛的可解極大子群均在g中弱擬正規，則g可解。( 7 ) assume thatg has two nilpotent maximal subgroups not conjugate ing, which are weakly quasinormal ing, then g is nilpotent if and only if g has no section isomorphic to d, where d is identical with one in ( 6 )
（ 7 ）若群g存在兩個不共軛的冪零極大子群均在g中弱擬正規，則g冪零當且僅當g與d型群無關，其中d型群的定義同（ 6 ）中d型群的定義。( 4 ) the special geometric restrictions like parallelism and perpendicularity implicated in vanishing elements are deeply studied. in single - view case, the theory is presented to interpret relationship between two planar lines by applying 3d invariants of vanishing points. in two - view case, the method on extraction vanishing point of an arbitrary sp atial line is described, and moreover, the theory is presented to interpret relationship between two elements in 3d space, such as two lines, two planes, line and plane, and so on
（ 4 ）詳細論述了消失元素（消失點、消失直線、消失平面等）所體現的垂直、平行等特殊幾何約束關系；對單視圖，提出了一種利用消失點列的3d不變量解釋平面直線關系的方法；對雙視圖，提出了利用自共軛三角形和對極幾何約束，提取任意直線的消失點的演算法，並在此基礎了提出了一種利用消失元素的3d不變量解釋直線間、直線與平面間、平面間等多種空間幾何關系的方法。Gradient methods of them are efficient, but have disadvantages of getting stuck in local minima, requiring gradients calculations, working only on continuous and differentiable parameters
其中，共軛梯度法收斂速度較快，但要求目標函數可微、連續，而且優化參數數目有限;隨機搜索無需計算梯度，但是效率太低，而且容易陷入局部極值。分享友人