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 axis射束轴beam lead梁式引线,梁式引线掐beam path束路径,光路beam knee梁柱隅铁beam stop束阑beam node框架节点Beam Gate梁门beam tube束射管,集射管,束管beamspaee波束域beam flux束流