短語(yǔ)詞組短語(yǔ)frequency difference doubling system 倍頻制frequency y doubling 倍頻lbo frequency -doubling lbo倍頻Frequency -doubling gyroklystron 倍頻回旋速調(diào)管frequency -doubling transponder 翻譯;倍頻轉(zhuǎn)發(fā)器;倍頻詢(xún)答機(jī)BIBO frequency -doubling BIBO倍頻intracavity frequency -doubling 腔內(nèi)倍頻 返回 frequency doubling