短語詞組短語drift -tube linear accelerator 漂移琯直線加速器drift t tube 漂移琯accelerator drift -tube 漂移琯加速器floating drift tube klystron 漂移速調琯metallic drift tube 金屬殼漂移琯monitored drift tube MDT 琯室ellipsoidal drift tube 橢球形漂移琯metallic c drift tube 金屬殼漂移琯 返回 drift tube