FXabbr.固定电台 (=Fixed Station)abbr.外汇 (=foreign exchange)FWabbr.隔火墙 (=firewall)abbr.淡水 (=fresh water)abbr.全波(=full wave)fwd.forward； abbr.；=FWD sol进带继电器FWD slack进带松弛FWD slack sw进带松弛开关FWD idler sol进带惰轮继电器FWD slack memory进带松弛存储