Noun:

1. a collimated flow of particles (atoms or electrons or molecules)

Particle UP小品词-UP-particlen.颗粒；微粒；极小量；质点；粒子；[语]小品词particle release颗粒释放particle fluence粒(子)流(量)密度particle charged[医] 带电粒子particle counter粒子计数器particle packing颗粒堆积particle element颗粒元particle monitor微粒监控器particle horizon粒子视界Particle content磁悬液浓度particle cluster粒子团