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discrete     
相关语句
  离散
     Symmetry Studying on the Discrete Hopfield Model Neural Networks
     离散Hopfield模型神经网络的对称性研究
短句来源
     Synthesis of Petri nets Controller for Discrete Event Systems
     离散事件系统的Petri网控制器综合
短句来源
     The Key Techniques of Spatial Database Based on Regularly Spatial Discrete Domains Objects
     基于均匀空间离散域对象的空间数据库关键技术研究
短句来源
     Research on Public-Key Cryptography Based on Elliptic Curve Discrete Logarithm Problem and It's Algorithm
     基于椭圆曲线离散对数问题的公钥密码及其算法研究
短句来源
     Supervisory Control for Discrete Event Systems Based on Cascade Petri Net
     基于序状Petri网的离散事件系统监控理论
短句来源
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  离散的
     Constructing the exact solutions of the (2+1)-dimensional Hybrid-Lattice and discrete mKdV equation
     辅助方程构造(2+1)维Hybrid-Lattice系统和离散的mKdV方程的精确解
短句来源
     WT5”BZ]On condition that the basic wavelet Ψ(t) is bandimited,a reconstruction formula of the signal f(t) based on a half discrete wavelet transform ( W Ψf)(na,a)(n∈Z,a∈R) is given.
     在基小波 Ψ(t)为带限的条件下 ,基于半离散的小波变换(WΨf ) (na,a)  (n∈ Z,a∈ R)信号 f(t)的重构公式被给出 .
短句来源
     In this paper we consider the nonautonomous discrete food limited model with impulses Δ x(n)+∑m i=1 r i(n)x(n-l i)x(n-l i)+11+λ[x(n-l i)+1]=0, n≥0,n≠n k;
     考虑具有脉冲的非自治离散的食物有限模型Δx(n) +∑mi=1ri(n)x(n -li) x(n -li) +11+λ[x(n-li) +1]=0 , n ≥ 0 ,n≠nk;
短句来源
     A class of 2+1-dimensional nonlinearevolution equations, the 2+1-dimensional Gardner equation and four new 2+1-dimensional discrete integrable models are decomposed into the 1-i-i-dimensionalJaulent-Miodek equations, new 1+1-dimensional soliton equations, and the 1+1-dimensional nonlinear network equations describing a Volterra system, respectively.
     一类2+1维非线性演化方程、2+1维Gardner方程和四个新的2+1维离散的可积模型分别被分解成1+1维Jaulent-Miodek方程、新的1+1维孤子方程和描述Volterra系统的1+1维非线性网方程。
短句来源
     However, there are few results on the discrete case [1-4, 23,24].
     然而,除文献[1-4,23,24],关于离散的情况,结果很少.
短句来源
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  离散型
     SYMMETRIES OF THE(2 +1) DIMENSIONAL DISCRETE Toda EQUATION
     (2+1)维离散型Toda方程的对称性
短句来源
     MATHEMATICAL NEURAL NETWORKS(Ⅳ)──ON DISCRETE FEEDBACK NEURAL NETWORKS
     数学神经网络(Ⅳ)──离散型反向式神经网络
短句来源
     Parameters Estimation and Bootstrap Confidence Intervals of Generalized Discrete Exponential Family ARMA Models
     广义离散型指数族ARMA模型的参数估计及其Bootstrap置信区间
短句来源
     The Characteristic Analysis and the Design of Discrete Hopfield Neural Networks
     离散型Hopfield神经网络特性分析与设计
短句来源
     Supplier Evaluation Model Based on Discrete Hopfield Neural Network
     基于离散型Hopfield神经网络的供应商评价模型
短句来源
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  离散化
     The error analysis shows that the measurement error is caused by the noise of the accelerometer,discrete double integration,noise of beacon and frequency characteristic error.
     对线加速度计辅助惯性姿态角测量的误差分析表明,测量误差由加速度计噪声、二次积分离散化、信标噪声和加速度计频率特性误差组成。
短句来源
     The Monotonic Convergence of the Discrete Newton-Moser Type of Method
     离散化的 Newton-Moser 型方法的单调收敛性
短句来源
     Finally discrete modulation mode (0, QPSK, 16QAM and 64QAM) is used to approach the optimally allocated continuous modulation mode, and simulation results demonstrate that the capacity loss from this approaching is negligible and QoS is guaranteed.
     最后使用连续调制离散化近似(O,QPSK,16QAM和64QAM)的方法逼近基于连续调制优化的分配结果,仿真结果说明这种离散逼近的方法带来的信道容量损失可以忽略,并且能够保证给定的QoS要求,这种方式适合于可变速率的业务。
短句来源
     A Method of Marr Wavelet Discrete and Application
     Marr小波离散化方法及其应用
短句来源
     Though there are essential differences between P2P with web service: P2P leaned to discrete model and web service leaned to client/server model, they also have the same or similitude characteristics.
     通过深入分析Web 服务和P2P 体系结构,发现两者在体系上虽然存在着根本的差别:P2P 偏向离散化模型,而Web 服务偏向客户/服务器模型,但是Web服务和P2P 计算环境本身从实质上具有较多的相似之处和可以互补的特征。
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  discrete
We present a new family of discrete subgroups ofSO (5, 1) isomorphic to lattices inSO (3, 1).
      
Compactness propertiesCn andC Pn for locally compact groupsG are introduced generalizing the finiteness propertiesFn andF Pn for discrete groups.
      
They generalize the finiteness propertiesFn andFPn for discrete groups.
      
We study discrete (Kleinian) subgroups of the isometry group Iso+H4 of the real hyperbolic space of dimension 4.
      
Gabor time-frequency lattices are sets of functions of the form $g_{m \alpha , n \beta} (t) =e^{-2 \pi i \alpha m t}g(t-n \beta)$ generated from a given function $g(t)$ by discrete translations in time and frequency.
      
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In tins note, we consider a dynamical system of the following type. The total Ilamiltonian H is separated into two parts H0 and V,H0 possesses the same continuous spectrum as that of H, but H possesses in addition a discrete spectrum corresponding to bound states. It is shown that the solution in the interaction representation of the time dependent Schiodinger equation with initial condition specified at t=±∞ is not unique. It contains an unique scattering-state part but an arbitrary bonud -state part....

In tins note, we consider a dynamical system of the following type. The total Ilamiltonian H is separated into two parts H0 and V,H0 possesses the same continuous spectrum as that of H, but H possesses in addition a discrete spectrum corresponding to bound states. It is shown that the solution in the interaction representation of the time dependent Schiodinger equation with initial condition specified at t=±∞ is not unique. It contains an unique scattering-state part but an arbitrary bonud -state part. The former part is a physical solution and can be obtained directly by operating U(t,±∞) on initial state ψ(±∞) where U(t,±∞) is defined as lim U(t,t0) (see reference [6]). This solution may be used as thestarting point of formal scattering theory. In addition we have discussed and clarified some points in the earlier works of Lippmann-Schwinger, Greater and Arnous-Zienau.

本文考虑了如下的力学系统:其总哈密顿量为H=H_o+V,其中,V为微扰算符,H_o只有连续谱,H除了与之相同的连续谱外,还有相应于束缚态的分立谱。文中证明:相互作用表示的薜定谔方程在无限时刻初条件下的解是不唯一的。但只有一个解是有物理意义的。这个解可以由U(t,±∞)算符作用于初态ψ(±∞)而直接得出,并可作为散射理论的出发点。 其次,借助以上的结果,对Lippmann-Schwinger,Coester以及Arnous-Zienau等人的工作进行了讨论,澄清了其中若干问题。

This short paper investigates two aspects of Chew-Low equations. First, it is compared with the usual formal theory of scattering, for example, that developed by Moeller. In comparison, it is proved that the wave functions occuring in the two formalisms are identical, apart from a constant multiple which represents the scalar product of the wave functions of a bare nucleon and a dressed nucleon. Next, equations of Chew-Low type with two h functions both possessing discontinuities along real axis from 1 to ∝...

This short paper investigates two aspects of Chew-Low equations. First, it is compared with the usual formal theory of scattering, for example, that developed by Moeller. In comparison, it is proved that the wave functions occuring in the two formalisms are identical, apart from a constant multiple which represents the scalar product of the wave functions of a bare nucleon and a dressed nucleon. Next, equations of Chew-Low type with two h functions both possessing discontinuities along real axis from 1 to ∝ and from -1 to -∝ are investigated. It is shown that for the solution to exist, certain conditions on the crossing symmetry must be satisfied and that in certain special cases where the above condition is satisfied, existence of solutions requires the presence in the equations for h of an infinite number of terms representing intermediate discrete states.

这篇短文讨论了Chew-Low方程的二个问题。第一,我们将它与寻常的散射形式理论作一比较,证明了二个理论的波函数除去一个常数倍外,完全相同。这个常数倍即是物理核子及裸核子的波函数的内乘积。第二,我们讨论了一般的含有二个h函数的Chew-Low方程的解,方程的形式使它们在实轴上在(1,∞)及(-1,-∞)二段上不连续。我们证明了为使解存在,交叉对称必须满足某些条件,而即使这些条件已满足,在某些情形下解的存在要求原来的h的方程含有无穷多个代表中间分立态的项。

Sustained nociceptive stimuli were applied to the hind limb of 8 monkeys (Macaca mulatta)in three ways:(1)fracturing the fibula;(2)applying a chemical irritant(ether extract of capsicum)to the sciatic nerve topically;(3)injecting hypertonic saline into the gas- trocnemius and its adjacent subcutaneous tissues.All these methods were found to be capable of producing,on the surface of the pinnae,small discrete spots tender to pressure.The topographical distribution of the spots was not regular;but,statistically,they...

Sustained nociceptive stimuli were applied to the hind limb of 8 monkeys (Macaca mulatta)in three ways:(1)fracturing the fibula;(2)applying a chemical irritant(ether extract of capsicum)to the sciatic nerve topically;(3)injecting hypertonic saline into the gas- trocnemius and its adjacent subcutaneous tissues.All these methods were found to be capable of producing,on the surface of the pinnae,small discrete spots tender to pressure.The topographical distribution of the spots was not regular;but,statistically,they often appeared near the tip of the triangular fossa and the antitragus of the pinna.They began to appear from 40 minutes to several hours after the noxious treatment,and persisted for a period from 3 days to a few months(7—10 days on average).Intravenous injection of drugs known to suppress the activity of the reticular forma- tion of the brain stem,such as chlorpromazine or nembutal,augmented the reaction to pressure and increased the number of spots.On the contrary,drugs,such as LSD_(25),amphetamine or adrenaline,which increase the excitability of the reticular formation,suppressed the reaction to pressure and decreased the number of spots.In other experiments,procaine solution was injected into the third ventricle of the brain;1—2 minutes after the injection the referred tender spots disap- peared and reappeared after 13—60 minutes.This fact suggests that the central mechanism con- cerned in the production of the referred tenderness involves neural structure or structures situated in the central portion of the rostral brain stem;and perhaps the mechanism is inhibited by impulses from the reticular formation,as indicated by the experiments of intravenous injection.

用以下三种方法在8只猴人工产生了牵涉性耳郭压痛点:(1)切断腓骨;(2)化学物质(辣椒的乙醚提取物)刺激坐骨神经;(3)下肢肌肉及皮下注射高渗盐水。压痛点可出现于耳郭各处,但比较集中于三角窝尖端及对耳屏附近。压痛点在损伤后40分钟至数小时出现,持续3天至数月(平均7—10天)。静脉注射药理学上认为对脑干网状结构有抑制性影响的药物(氯丙嗪及戊巴比妥)后,压痛点增多,压痛反应增强。注射对网状结构有兴奋性影响的药物(离麦角酸二乙胺、苯异丙胺或肾上腺素),效果相反。这暗示参与耳郭压痛现象的神经结构受来自网状结构的冲动的抑制。第三脑室注射普鲁卡因溶液可在1—2分钟内取消耳郭压痛点,至第13—60分钟又行恢复,表明参与牵涉性耳郭压痛反应的一个中枢环节在脑干前端的中央部分。

 
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