查询词典 ultrasonic sound

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。

Results The ultrasonic examination of tuberculosis hydrothorax showed that hydrothorax in thoracic cavity had no echo zone with clear sound transparent;pleura was thickened uniformly;opaque dark area of fluid had no parenchymatous phyma.

目的 了解结核性与癌性胸腔积液超声显像特点，研讨两者超声鉴别诊断要点方法应用B型超声检查，回顾性分析50例结核性与癌性胸腔积液的超声显像特点。

Ultrasonic examination of cancerous hydrothorax showed that hydrothorax in thoracic cavity had no echo zone filled with full of thin light spots;sound transparent was not very clear;pleura showed uniform thickening;opaque dark area of fluid had parenchymatous uniform phyma.

结果 结核性胸腔积液超声检查显示胸腔内胸腔积液无回声区透声清，胸膜均匀性增厚，液性暗区内未见实质性肿块；癌性胸腔积液超声检查显示胸腔内胸腔积液无回声区内充满细小光点，透声欠清，胸膜呈非均匀性增厚，液性暗区内可见有实质非均质性肿块。

In order to detect whether there is a base gap between the explosive charge and the inner cone of a shell and ensure its fighting performance, this paper puts forward an ultrasonic inspection method of base gap based on the principle of conservation of sound flux in propagation and according to the special construction of the shell .

为了检测出弹体装药与内锥面之间底隙的有无，以确保弹体的战斗性能，本文在超声波传播过程中声通量守恒原理的基础上，根据弹体结构的特殊性，提出一种利用超声波检测弹体内锥面底隙的方法。

Other anemometer types include ultrasonic or laser anemometers which detect the phase shifting of sound or coherent light reflected from the air molecules.

此外，还有超声和激光测风仪，分布利用声音的相位移和空气分子光的相干来测风。

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。