光束電流計 galvanometer light beam recorder: 筆馬達光束記錄器light-beam galvanometer: 光束筆馬達galvanometer light modulator: 電流計光調(diào)制器; 電流計式光調(diào)制器light mark galvanometer: 光標檢流計light ray pointer galvanometer: 光標指針式檢流計; 光線指針式檢流計下載手機詞典可隨時隨地查詞查翻譯