Spherical and dendritic Bi nanocrystals were prepared by ultrasonicdispersion method.
用超声分散法制备了球形与树枝状铋纳米晶体；
2
It was found in the study that the use of ultrasonic wave increased the concentration of O3 per unit of time because of ultrasonicdispersion;
研究发现，超声可以通过超声粉碎作用，增加单位时间内O3的浓度；
3
This paper probes into the influences of such factors as dispersing agent, ultrasonicdispersion time, and stirring sample on the value of the grain size of foaming agent ADC.