单词	gratng space
释义	gratng space 栅线间距
随便看	track facility track fading track failure track fastened directly to steel girders track fastener track fastening track fastenings track fastenings for light track fasteningss track field track field athletics track-filling algorithm track filling indicator track filter track fitting track fixtures track flag track floppy-disk track follower track following track following discriminator track-following feedback control system track-following servo track following servosystem track following servo system track-following servo system