Beamysn.长尾巨鼠属beamvi.微笑；发光vt.播送；发射；用梁支撑n.桁条；光线；(光线的)束；(横)梁beam positioner电子束位置控制器beam resistance电子束电阻beam switchover波束切换beam slab bridge梁板桥beam suppression射束抑制,波束抑制,束抑制,束消隐beam calibration电子束清晰度beam homogenizer均束器beam current lag束流残像Beam installment射线装置beam energy loss束能损失