1) sound frequency
声波频率
1.
The minimum fluidization velocity has a minimum value when the frequency of sound waves approached 150 Hz, whereas it decreased as the sound pressure level was increased at the same sound frequency.
气泡尺寸和鼓泡频率随声压的增大而减小,随声波频率的增大先减小后增大。
2) ultrasonic frequency
超声波频率
1.
By using ultrasonic frequency,pulse transmission technique was used to probe the dispersion and attenuation mechanism of flu- id-saturated rock in laboratory.
在超声波频率下,利用脉冲透射法,探讨了实验室条件下流体饱和岩石的频散和衰减机制,对不同围限压力下的干燥和不同粘度流体饱和砂岩样品的衰减特征进行了系统的研究。
2.
The desulfurization rate presented a positive relationship with the ultrasonic power,but a negative relationship with ultrasonic frequency within the range of 25 kHz to 60 kHz.
频率25～60kHz范围内,二氧化硫脱除率与超声波频率呈负相关,25kHz处理效果最佳,依次为40、60kHz。
4) frequency of IAW
离子声波的频率
5) sound analyzer
声波频率分析器
6) acoustic frequency sounding
声波频率测深
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条