定频友敌鉴别仪fixed: adj. 1.固定的;确定的,不变的,固执的。 2.【化 ...frequency: n. 1.屡次,频仍,频繁。 2.(脉搏等的)次数,出现 ...iff: IFF = identification: friend ...iff: IFF = identification: friend or foe 【军事】敌我识别器,敌我识别系统。 fixed frequency: 标定频率; 固定频率; 稳频下载手机词典可随时随地查词查翻译