beamedadj.有梁的；照耀的；广播的动词beam的过去式和过去分词形式.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 induced束流激发的, 束流引起的beam relaxor锯齿扫描振荡电路beam spacing射束间距,梁间距Beam-frame框架结构beam pentode束射五极管beam opening梁上开洞beam loading电子束加负荷beam breakup束流消失beam buncher聚束器beam scatter电子束散射