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beamed rediation成束辐射beam-switchingn.射束转换adj.射束转换beam-confining聚束beam mass system波束质量系统Beam waist width束腰宽度beam compression波束压缩beam composition束流成分, 束流组成beam path roller辙尖移动滚轮Beam of forklift叉车横梁beam shaping kit线束成形设备