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1·Ultrasonic power ultrasonic frequency may adjust according to the needs.

超声功率与超声频率可根据需要调整。

2·Ultrasonic power and ultrasonic frequency may adjust according to the needs.

超声功率与超声频率可根据需要调整。

3·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。

4·Experiment showed control the direction of laser could be controlled by changing ultrasonic frequency.

实验证明，通过改变超声频率可实现对激光光束方向的控制。

5·And a ultrasonic generator with ultrasonic frequency and power adjustment is designed, as well as its portable shell.

设计超声波发生电路和超声波换能器的外壳，使超声波发生器方便携带。

6·The system also includes a transducer for converting the ultrasonic frequency electric signal to an ultrasonic inertial vibration.

超声换能器是把超声电信号转换成超声振动信号作用于人耳后的乳突骨。

7·The effects of ultrasonic frequency, ultrasonic intensity, cleaning time, cleaning temperature on oil sand separating were investigated.

考察了超声频率、超声声强、清洗时间和清洗温度对油砂分离的影响。

8·RESULTS & CONCLUSION: The extraction effects were different in using ultrasonic extractors with different power levels and ultrasonic frequency.

对同批样品进行反复测试结果与结论：不同功率、 频率超声提取仪提取效果和对含量测定的结果不同。

9·A comparison study on two situations, with and without coal load on a steel plate, has been carried out by using audio and ultrasonic frequency.

应用声超声及超声穿透试验对钢板上有无煤负载两种情况进行了对比研究。

10·It has been researched systematically on abroad, and an analysis technology was put forward to predict all the velocity's dispersive of frequency from zero to ultrasonic frequency.

国外在这方面有较系统的研究，并提出了一种预测零频到超声波频率之间全部速度频散的分析技术。