超声波

Ultrasonic is a kind of mechanical wave that frequency is upper 20KHz. Ultrasonic may be generated by many ultrasonic transducers.

超声波是频率高于20KHz的机械波，它可由多种能量转换器转变而成。

With the treatment of silicone coupling on the surface of nano-Al2O3 particles and the action of mechanical decentralization and ultrasonic wave, the particles were dispersed in the matrix of epoxy resin.

采用对纳米颗粒表面进行硅烷偶联处理和机械分散与超声波振动分散相结合的方法，实现了氧化铝纳米粒子在环氧树脂中的分散。

Key words: sandstone; microcracks; wave velocity; mechanical properties

关键词］砂岩，微裂纹，超声波速度，力学性质

According to different traits of fungus,we worked out auto-bottling machine,auto-inoculating machine,auto-scratching machine,auto-digging machine,high pressure steam stericicer,set down the operating rules,establish the mechanise pipelining.It has become patent.

本项目根据不同种类食用菌的生产特点，研究机械化装瓶，接种，搔菌，挖瓶，超声波加湿，高压蒸汽灭菌等工艺技术与装备，制定食用菌工厂化生产技术规范与操作规程，建立食用菌生产从配料到收获全过程机械化生产流水线，形成专利产品。

ABSTRACT : Objective Introduce the current situation of the ultrasonic technology application in the medicament field.

目的 介绍超声波技术在药剂领域的应用现状。

An experimental study of megahertz acoustic attenuation in fluidized mud has been made respectively in Shanghai Acoustics Laboratory, Chinese Academy of Sciences and in University of Sydney, Australia.

文章报道了浑水中的声衰减的实验研究结果，超声波的频率分别为1、2、3、4、5MHz。

By extracting the total flavonoids from Water Hyacinth with the two different methods of extraction and ultrasonic and taking Ethanol as menstruum the two extracting methods were compared;The activity of anti-oxygen of flavonoids extract was also studied.

以乙醇为溶剂，采用浸提法和超声波法提取凤眼莲总黄酮，通过单因素实验比较两种提取方法；并对黄酮提取物的抗氧化性进行了研究。

The longer time of ultrasonic irradiation, the higher conversion of methyl methacrylate.

随着超声波辐照时间的增加， MMA 单体的转化率随而增大。

The higher temperature of polymerization, the higher conversion of methyl methacrylate.

超声波辐照下，MMA单体的转化率随聚合反应温度的提高而增大。

This paper discussed the time difference method of measuring flow in pipes and improving the measurenent performence.

讨论了超声波测量管道内流体流量的时差法及其性能的改进方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。