速調管 Save Sign in to save words Simplified: 速调管 sùtiáoguǎn ㄙㄨˋ ㄊㄧㄠˊ ㄍㄨㄢˇ klystron (electronic tube used to produce high frequency radio waves) Character by character 速(sù)fast 調(tiáo)harmonize 管(guǎn)surname Guan A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0