1.
The good news is that because this call has an ultrasonic frequency, we are unable to hear it.
好在这些声音是超声波频率，所以我们听不到这些声音。
2.
Ultrasonic frequency adjustable driver's circuit design
一种频率可调超声波驱动电路的设计
3.
Research and Realization of an Ultrasonic Cleaner with Constant Power and Frequency Tracing;
频率跟踪、恒功率超声波清洗机的研究与实现
4.
Study on the Simulation of Frequency-Tracking Control in Ultrasonic Metal Welding;
超声波金属焊接频率跟踪仿真控制研究
5.
Study on the Scream during the Process of the High-power Low-frequency Ultrasonic Cleaning;
低频大功率超声波清洗过程中啸叫现象的研究
6.
Study on algal control by low-frequency,low-power ultrasonic
低频、低功率超声波抑制藻类生长的效果
7.
Frequency Tracking Technology of Ultrasonic Motor Based on Phase-Locked Loop
基于锁相环的超声波电机频率跟踪控制技术
8.
The middle part of an audio frequency.
中声频，中频声波频率的中间部分
9.
Design for Frequency-modulated Ultrasonic Generator in Ultrasonic Bonding Field
超声键合变频式超声波发生器的设计
10.
Both traditional ultrasound and elastography use echoes from high-frequency sound waes to create pictures of what is going on inside the body, but elastography goes a step further.
传统超声及弹性成像均利用高频率声波创建持续于人体中的图像，只是弹性超声更进了一步。
11.
Broadband: A band of light wave or sound wave with a wide range of frequencies.
阔波段:频率范围广的一段光波或声波。
12.
"Ultrasonics deals with ultrasonic waves, which have frequencies above the audible range, and their applications in industry and medicine"
超音波声学研究包括超音波之振动(频率高于可听得见的范围)以及工业和医学方面的应用
13.
The frequency effect of a low-MHz bi-beam ultrasonic irradiation;
低频双束超声辐照的频率效应(英文)
14.
Acoustics--Ultrasonic power measurement in the frequency range 0.5～10MHz
GB/T7966-1987声学0.5～10MHz频率范围内超声声功率的测量
15.
Visco-acoustic transmission waveform inversion for velocity structure in space-frequency domain
频率域粘弹性声波透射波形速度反演
16.
Chirp up the chirp is played from start frequency to the end frequency.
短促声波开始短促声波从起动频率对结束频率播放。
17.
Adaptive Variable-Frequency Speed Control for Ultrasonic Motor Based on RBFNN;
基于RBFNN的超声波电机自适应变频控制
18.
Feature extraction of ultrasonic echo signals(RF);
超声回波射频(RF)信号的特征值提取