upper resonant frequency共振频率: resonance frequency; resonan ...上限: upper limit频率上限: upper frequency limit; upper limit frequency; upper-=frequency limit可用频率上限: top usable frequency磁共振频率: magnetic resonance frequency下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:共振频率上限，即可在微信中查询翻译
