用超速保安器 overspeed governor: 超速調(diào)節(jié)器; 限速器;超速限制器emergency governor overspeed governor: 危急遮斷器back up overspeed governor: 備用超速保安器back-up overspeed governor: 備用超速保安器emergency overspeed governor: 危急保安器下載手機(jī)詞典可隨時隨地查詞查翻譯