undulating membrane

Reducing the quality fluctuation of PVC resin produced by calcium carbide method among each production batch;

缩小电石法PVC树脂批次间的质量波动

Discussion on influence of coal quality fluctuation in coal-fired power plants;

燃煤电厂煤质波动的影响与对策分析

Influence of load fluctuation on reaction system of LLDPE plant and its countermeasure;

LLDPE装置负荷波动对反应系统的影响及措施

Analyzing the reasons of the pure argon column undulation.

分析精氩塔内压力波动的原因,并采取相应的处理措施,使精氩塔正常生产。

The fish is propelled by undulations of a long-based dorsal fin while the body axis is in many cases held straight in swimming.

以依靠长背鳍推进的“尼罗河魔鬼”为研究对象,对柔性长鳍波动推进模式的运动学进行了研究。

And from the industry policy,the industry structure and the economic growth mode transformation,the reason and specialty of the undulation of the energy supply-demand and the energy consumption structure is analyzed.

本文从我国近20年来能源产业产品供需量和消费结构的状况着手,研究了能源供需量波动和消费结构变化的特性,并从产业政策、产业结构和经济增长方式演变的角度重点分析了供需量波动和消费结构变化的原因和特点,在此基础上,分析了我国近年能源短缺的原因和解决办法。

Sand-dune Q absorption compensation based on 1-D elastic damping wave theory;

基于一维弹性阻尼波动理论的沙丘Q吸收补偿

The wave characteristic and axial clearance between static state and dynamic state about the screw displacement pump;

螺旋类容积泵的“波动特性”与动静态间隙

Analysis of continuous spectrum wave packet in rotational-stratification two-dimension ocean;

旋转层化二维海洋波动连续谱的波包特征分析

It is shown that the viscous-spring artificial boundary adopted this method has high precision,and the method can be used in analysis of wave motion problem easily.

探讨利用AD INA的弹簧阻尼单元模拟黏弹性人工边界的方法,并进行了均匀半空间算例与成层半空间的计算,验正了采用的黏弹性人工边界具有较高的精度,可以方便的应用于波动问题的模拟解析,从而可以有效地分析结构—地基的动力相互作用问题。

Three-dimensional visco-elastic artificial boundaries in time domain are developed by means of theory of elastic wave motion in this paper.

应用弹性波动理论,发展了实现波动直接模拟的三维时域粘弹性人工边界。

It is shown that the effects of the distortion of finite elements on wave motion are significant , great distortions of the element shapes will cause a complete distortion in the simulation of wave motion, the velocity of wave propagation in lumped-mass finite element discrete models is not always less than that in contin.

结果表明单元畸变对波动规律影响显著,当单元畸变较小时,单元畸变对波动传播并不产生明显的不利影响,当单元畸变较大时,这一影响不可忽略。

Comparison of the Price Volatility between Sino-US Soybean Futures;

中美大豆期货价格波动特征比较

RMB s Volatility:Measurement and International Comparison;

人民币汇率波动:测算及国际比较

Long-term Memory in Stock Returns and Volatility: A Multi-national Evidence from V/S Statistic;

股市收益和波动性长期记忆的国际比较——基于V/S的经验证据