Laser power beaming and propulsion, on the other hand, would require sustained average power output from lasers of megawatts to gigawatts.是什么意思_Laser power beaming and propulsion, on the other hand, would require sustained average power output from lasers of megawatts to gigawatts.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句