超声波的

If the ultrasonic power doesn't work at the resonant frequency of mechanical syntonic system, UVC is not able to go along continuously and stably.

若超声波电源的工作频率不能自动跟踪机械系统的谐振频率，超声振动切削就无法持续稳定地进行。

Advanced ultrasonic flowmeter of overseas is adopt, technical flow of gas well is predigested. At the same time, syphon flowmeter is applied for the first time in the measure of gas well and spot experimental work of syphon flowmeter is accomplished.

采用了目前国外先进的超声波流量计，简化采气井工艺流程，同时首次将弯管流量计应用到了采气井计量中并完成了弯管流量计的现场试验工作。

The study for the comprehensive utilization of Syringa oblata and Syringa reticulata var for preparations.

本实验分别采用水蒸气蒸馏法、乙醇回流法以及超声波提取法对紫丁香和暴马丁香中的挥发油进行提取，本研究为实现丁香的综合利用做前期准备。

However, many uncon ventional logging methods present their advantages. This paper introduces two of them that are used success fully in the horizontal wells abroad: borehole televiewer and ultrasonic logging technique.

近些年国外已推出多种水平并非常规测井技术，井下电视和超声波测井技术是近2年水平井生产测井中的应用较多的两种技术。

This paper deals with the effect of ultrasonics on liquids flow through porous media, especially two-phase flow.

本文主要研究了超声波对多孔介质中液体流动的影响，尤其是两相流动的影响。

The pictures are produced by sending ultrahigh frequency sound waves, far too high for us to hear, from probe into the body of mother.

这张是用超声波扫瞄母亲的身体后进行得到的图片。

Its principle is on the basis of ultrasonic wave theory; this sensor can adapt various environments.

它是利用超声波原理进行检测的。测量系统具有良好的环境适应能力。

Thus, understanding the propagation chaxacteristics of the ultrasonic wave is essential for successful application of the technique.

因此，正确认识这种检测形式下的超声波传播特性是有效应用该技术的基础。

The dynamical properties of frozen soil model are related to propagation velocity of Ultrasonic wave in frozen soil.

冻土模型的动力学性质同超声波在冻土中的传播速度有关。

The wave front of the ultrasonic wave can be changed by using the sound lens.

目前 ，增大超声波在岩层中传播距离的方法是增大超声换能器的功率。

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。