...D 路灯;自由曲面;二次光学设计;配光 中图分类号:TN312+.8 文献标识码:B [gap=1169]Keywords : LED s tre e t light; fre e form ; s e condary optics de s ign; light dis tribution ..
abstract:Freeform, or freeform radio, is a radio station programming format in which the disc jockey is given total control over what music to play, regardless of music genre or commercial interests. Freeform radio stands in contrast to most commercial radio stations, in which DJs have little or no influence over programming structure or playlists.