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 luminosity束流亮度beam coordinate束流坐标beam adjustment犁辕调节beam duty cycle束流负载周期Beam distortion波前畸变beam-accessedn.射束存取beam processing电子束加工beam- forming波束形成beam bracketing导束制导beam translator光束平移器