单词	足尖前指地
释义	足尖前指地toe forward pointing
随便看	optical line amplification optical linear repeater optical line follower optical linescan optical linewidth optical link optical link pilot protection system optical links optical links and equipment optical lithography optical load sensor optical local area network optical local exchange carrier optical loft optical log optical logic optical logical devices optical logic devices optical logic devices and optical computing techniques optical logic element optical logic gates optical loop mirror optical loss optical loss measurement optical loss test sets