查询词典 periodic

Grey models of two steps can show the periodic law of load data or the exponential law well, Models of three steps can give consideration to two kinds of characteristics of the load data, Thus these models could consider the nature of the load data in an all-round way.

二阶灰色模型能够较好地表示负荷数据周期性规律或指数性规律，而三阶模型则能够兼顾负荷数据的周期、指数双重特性，从而能够全面地考虑到负荷数据本身的性质。

The study of the course can make students to understand and grasp the basic theories about periodic law of elements, modern mass structure theory, thermodynamics, chemical kinetics, four kinds of equilibriums of acid-base, oxidation-reduction, precipitation- dissolution and coordination and so on. It can also help students grasp basic chemical experimental skills. It has being tried to cultivate students with correct methods of study and research, with favorable innovation consciousness and with scientific character. And it has being expected to greatly improve students' abilities of analyzing and resolving questions.

通过本课程的学习，使学生理解并掌握元素周期律、近代物质结构理论、化学热力学、化学动力学、溶液中的酸碱平衡、氧化还原平衡、沉淀平衡和配位平衡等基本理论并掌握基本的化学实验技能；培养学生正确的学习和研究方法、良好的创新意识和科学品质，训练学生分析、解决问题的能力。

Long long ago, we knew the periodic motion of a planet.

很久以前，我们就知道行星的周期运动。

In this study, we will present the evidence of suppressing chaotic motion by adding periodic driving pulse signal.

在本研究中，我们将会呈现以脉冲讯号压抑混沌现象的实验结果。

Be this kind of relation and its motion, brought about the periodic wave motion of real economy.

正是这种关系及其运动，导致了现实经济的周期性波动。

A mechanical model of two-degree-of-freedom system with clearance was established,whose periodic motion and disturbed motion were studied.

建立了一类两自由度含间隙系统的力学模型，并研究了该系统的周期运动及运动的受扰运动。

It can be seen that a study of periodic motion will lay the foundation for future work in many different fields of physics.

由此可见，周期运动的研究，是研究物理学各个领域的基

And actual condition is not such, our country economy experienced big periodic wave motion a few times, caused huge loss.

而实际情况并不是这样，我国经济经历了几次大的周期波动，造成了巨大的损失。

An analytic method to study the periodic motion of double pendulums is presented.

描述了一种平面自由运动的双摆，考虑动量矩和能量守恒的条件，根据刘维尔可积定理可知该系统的可积性。

Effect of parameter on periodic and chaotic motion of system was studied using Mathematica.

借助计算机代数语言Mathematica程序研究了参数变化对系统周期运动和混沌运动的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。