查询词典 conservation law

At the same time, this paper set up a three-dimensional model, then analyzed and calculated of conducting cylinder heat transmission through software MATLAB and COSMOS. A mathematic model initial injection pulse-width is set up according to the quality's continuousness and the energy conservation law.

根据气体状态方程和能量守恒定律分析建立了基本喷油脉宽的数学模型，并运用在国产125ml摩托车汽油发动机上，仿真得出此发动机电控汽油喷射系统的初始喷油MAP图。

Inhomogeneous hyperbolic conservation law; viscosity solution; weak solution; entropy-entropy flux; maximum principle; Young measure; Dirac measure; compensated compectness

基础科学，数学，数学分析非齐次双曲型守恒律；粘性解；弱解；熵-熵通量；极值原理； Young测度； Dirac测度；补偿列紧理论

The truncation error of its local discrete energy conservation law is also exhibited.

用多辛Euler方法离散此方程组得到了它的多辛格式，并且推导了它的局部能量守恒律的离散误差。

We show a multi-symplectic scheme for the equations by the multi-symplectic Euler method. The truncation error of its local discrete energy conservation law is also exhibited.

用多辛Euler方法离散此方程组得到了它的多辛格式，并且推导了它的局部能量守恒律的离散误差。

Finally, in the third section, by constructing some functional which similar to the conservation law of evolution equation and the technical estimates, we prove that in the inviscid limit the solution of generalized derivative Ginzburg—Landau equation converges to the solution of derivative nonlinear Schrodinger equation correspondently in one-dimension; The existence of global smooth solution for a class of generalized derivative Ginzburg—Landau equation are proved in two-dimension, in some special case, we prove that the solution of GGL equation converges to the weak solution of derivative nonlinear Schr〓dinger equation; In general case, by using some integral identities of solution for generalized Ginzburg—Landau equations with inhomogeneous boundary condition and the estimates for the L〓 norm on boundary of normal derivative and H〓 norm of solution, we prove the existence of global weak solution of the inhomogeneous boundary value problem for generalized Ginzburg—Landau equations.

第三部分：在一维情形，我们考虑了一类带导数项的Ginzburg—Landau方程，通过构造一些类似于发展方程守恒律的泛函及巧妙的积分估计，证明了当粘性系数趋于零时，Ginzburg—Landau方程的解逼近相应的带导数项的Schr〓dinger方程的解，并给出了最优收敛速度估计；在二维情形，我们证明了一类带导数项的广义Ginzburg—Landau方程整体光滑解的存在性，以及在某种特殊情形下，GL方程的解趋近于相应的带导数项的Schr〓dinger方程的弱解；在一般情形下，我们讨论了一类Ginzburg—Landau方程的非齐次边值问题，通过几个积分恒等式，同时估计解的H〓模及法向导数在边界上的模，证明了整体弱解的存在性。

The axial and bending characteristis models the of the pneumatic pressure artificial muscle actuator were set up according to the energy conservation law and the infinitesimal deformation theory respectively, and simulation researches and experiments had been done for the characteristics of the actuator.

论文基于能量守恒与转换定律及最小形变原理建立了空气压人工筋驱动器的轴向驱动力学模型及弯曲转向特性模型，仿真计算了人工筋驱动器的驱动力学特性及弯曲转响特性，通过实验研究对理论模型进行了实验验证。

PartⅡis devoted to studying integrability of nonlinear DDEs from the view of conservation law starting from scaling symmetry.

第二部分研究非线性DDE守恒律的待定系数构造算法。

To fill this gap, the enhanced Poincaré inequality was obtained by considering the additional conservation law of momentum and by rigorous estimate of integral inequality.

为解决这个差异，利用周期带域上的Eady模型的动量守衡的性质，通过变分方法和积分的精细估计，建立一个加强的Poincairé积分不等式，从而证明了Eady模型的线性稳定意味着非线性稳定。

We also show two approaches to determine outer sections of double-volute passage with the same flow rate: one is based on functions in foreign literatures; the other based on principle of conservation law of moment of momentum.

同时，介绍了双蜗壳外侧等流量断面的两种设计绘形方法，即基于国外统计资料的速度系数法和基于速度矩守恒原则的数字积分方法。

A mathematical model that describes the transient flow is developed based on the conservation law of mass momentum and energy followed in the course of transient flow process of gasliquid phases.

根据气液瞬变流动过程中所遵循的质量、动量和能量守恒定律，建立了描述气液两相瞬变流动的数学模型。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。