The vacuum maintenance is a key technique of Electro-static gyroscope(ESG) which can influence the ESG s precision, reliability and life.是什么意思_The vacuum maintenance is a key technique of Electro-static gyroscope(ESG) which can influence the ESG s precision, reliability and life.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句