電子荷質(zhì)比 electron charge mass ratio: 電子荷質(zhì)比mass electron ratio: 質(zhì)量電荷比proton to electron mass ratio: 質(zhì)子proton-to-electron-mass ratio: 質(zhì)子電子質(zhì)量比charge mass ratio: 比電荷下載手機詞典可隨時隨地查詞查翻譯