自由振荡频率frequency: n. 1.屡次,频仍,频繁。 2.(脉搏等的)次数,出现 ...free directional oscillations: 飘摆振动frequency modulated oscillations: 档振荡oscillations: 振荡free running frequency: 固有频率下载手机词典可随时随地查词查翻译