超声波的

In the text, the relation between different kinds of acoustical parameters of ultrasonic wave and concrete quality will be discussed as well.

讨论了超声波的各种声学参数与混凝土质量的关系。

The article introduces the characteristic of ultrasonic, the ranging principle, the COMS chip shaping, the hardware circuitry and the software design.

文章介绍了超声波的特性及其测距原理、芯片的选型、硬件电路原理及软件设计。

A technological flow sheet to extract zein economically and efficiently from CGM was designed.

并对超声波的频率、功率、超声用容器对提取率的影响也进行了研究。

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。

This signal source is specially used in the experiment which measures the velocity of sound by ultrasonic.

它与实验中应用的声速测量仪及示波器配合，可以采用驻波法、相位法、时差法等测量方法来测超声波的速度。

Methods Dextran-coated iron oxide nanoparticles were prepared by ultrasonic and chemical coprecipitation method and the characteristics were evaluated.

利用超声波的粉碎空化作用，采用化学共沉淀法合成葡聚糖磁性纳米微粒。

The iatrical ultrasonic is about 1-15MHz at present, which generated by piezoelectricity crystal at the function of alternant electric field.

目前，医用超声波的范围多在1～15MHz，是由压电晶体在交变电场作用下发生机械振动而产生。

Ross shouldn't have gone, but he is dragged back by the sounds of the sonogram.

罗斯本来决定走了，不再参与这些事情，但是却被超声波的声音吸引回来。

He turns to go, but the sound of the sonogram catches hes ear. He returns and stares at it.

他转身要走，但超声波的声音吸引了他，他转回来，看起了屏幕。

To combine together, can examination arrive the car reverse the car medium, its stumbling block and car of distance, pass a LCD manifestation to hold a manifestation distance, and according to stumbling block and car tail distance far near solid hour send out to report to the police grade.

该系统将微计算机技术与超声波的测距技术、传感器技术等相结合，可检测到汽车倒车中，其障碍物与汽车的距离，通过液晶显示屏显示距离，并根据障碍物与车尾距离远近实时发出报警等级。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。