查询词典 commutation tables

Based on analyzing the d-δ commutation relation for the linear stationay differential constrained systems and affine differential constrained systems, the relationship between noncommutator of differentiation and variation and nonholonomicity of the differential constraints is briefly proved by means of Frobenius integrability theory.

文中以微分约束的Frobenius可积性理论为依据，在分析线性稳定微分约束系统和仿射微分约束系统的d-δ对易关系基础上，简要论证了微分与变分的非对易子与微分约束的非完整性之间的关系。

They include the fundamental concepts of jet bundle geometry needed in describing time-dependent mechanical systems, decomposition of jet bundles into a direct sum according to the constraints, horizontal distributions on constraint mainifolds, the global formulation of D'Alembert-Lagrange's equations and Chaplygin's equations, and nonholonomic mechanics on a Riemann-Cartan manifold. Meanwhile, the geometric significance of Chetaev's conditions and $\rd$-$\delta$ commutation relation are discussed in depth.

本文主要综述非完整约束系统几何动力学的外附型和内禀型Lagrange理论，包括非定常力学系统所需要的射丛几何学的基本概念、射丛按约束的直和分解、约束流形上的水平分布、 D'Alembert-Lagrange方程与Chaplygin方程的整体描述、以及Riemann-Cartan流形上的非完整力学，文中对Chetaev条件和d-δ交换关系的几何意义作了深入讨论。

Your commutation ticket is good for 3 more days.

你的月票还能使用三天。

The results showed that the theoretical analysis of commutation war correct.

结果表明换向理论分析是正确的。

I had my purse and commutation ticket stolen while I was sleeping in the train.

当我在火车上睡觉时，我的钱包和月票被偷了。

Also, students who take Commutation studies are required to take a minor in their first year.

同时在本科一年级的时候，传媒系的学生要求掌握相关的另一门专业。

The design of time parameters of the three-step commutation method is also proposed.

该文还提出了3步换相法的时间参数设计方法。

The results show that with the proposed method the commutation position could be easily detected.

结果表明，所提方法可方便地实现对TFLSRM换相位置的检测。

Finally, the results of experiment demonstrate the availability and correctness of the advanced commutation strategy of matrix converter.

最后通过实验方法验证了改进后的矩阵变换器换流策略的可靠性与正确性。

As a result be placed in an absolutely beneficial position on production and commutation of that product.

因而在该产品的生产和交换上处于绝对有利地位。

In this new architectural plan the Garden of Golgotha came to be at the centre of the new city.

Aelia 是高举他自己，并在此城内朝拜罗马诸神。

The continuous nature of peat accumulation means that terrestrial coaly rocks may provide a higher resolution and more complete record of base-level change than the time-equivalent shallow-marine strata, thus enabling the identification of highfrequency cycles that are not recorded in themarine strata.

泥炭积累的持续性质的手段，陆地coaly岩石可提供较高的分辨率和更完整的记录基准面变化的影响时，相当于浅海阶层，从而使确定的高频周期，不记录在themarine 阶层。