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 centre line束流中心线beam collinmator线束准直器Beam performance光束性能beamed radiation定向幅射beam-pump unit游梁式抽油机beam fill factor射束占空系数beam lead device梁式引线掐beam feed system射束馈电系统beam translation光束平移Beams Pin Bottle梁针牌