电子离子直接碰撞激发截面
Electron- ion direct impact excitation cross sections
重离子直线加速器
HILAC
heavy ion linear accelerator
heavy-ion linear accelerator
accelerator
heavy-ion linear
空气负离子密度
Air negative ions concentration
Aeroanion concentration
强酸性阳离子离子交换树脂
strong acid positive ion exchange resin
长定子直线感应电动机
Long Primary Double-sided Linear Induction Motor