Through contrasting vibration figure with wave figure, it shows both are similar in shape and have different essence.
通过将振动图像和波动图像做对比 ,应知二者形态相似 ,本质不同 ,具有区别性 ;判断质点动向的角度不同 ,各自具有规律性 ;可知量不同均可求波速 ,结果均有多解性 ;质点的路程和波传播的距离是两码事 ,但二者存在联系
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。