The addition of surfactant will narrow particle size distribution of microcapsules. 表面活性劑的加入會(huì )使微膠囊的粒度分布變窄。
The particle size distribution of the particulates and the rate of their coalescence were determined by using the Coulter counter. 應用庫爾特計數器測定粒度分布及粒徑變化規律。
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