1) ultrasonic frequency
超声频率
1.
Effect of ultrasonic frequency on structure of carbon nanotubes and catalytic activity of PtRu/CNTs catalysts for methonal electro-oxidation;
超声频率对碳纳米管结构及其负载PtRu催化剂催化活性的影响
2.
The effect of ultrasonic frequency on the morphology and phase composition of coating was investigated by SEM,EDAX,FTIR and XRD.
采用声电沉积工艺在炭/炭复合材料表面制备了磷灰石生物活性涂层,借助SEM,EDAX,XRD,FTIR等分析测试手段,考察了超声频率对涂层组成、结构和形貌的影响。
3.
The effect of ultrasonic frequency on the structure, surface texture, and surface groups of activated carbon (AC) was investigated by field-emission scanning electron microscopy, N_2 adsorption, and temperature-programmed desorption.
以不同超声频率处理后的活性炭为载体,以钡和钾为助剂制备了一系列钌基氨合成催化剂,并考察了其性能。
2) ultra-audible frequency
超声频率，超音频
3) ultrasonic frequency
超音频，超声频率
4) High frequency ultuasound
高频率超声
5) 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。
6) hypersonic frequency
特超声频[率]
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