half-power frequency半: half功率: power; rate of work; capacit ...频率: frequency; rate下半功率频率: lower half-power frequency半功率频率上限: upper half-power 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:半功率频率，即可在微信中查询翻译
