Two kinds of monolayer cobottom tanrs which store N2O4 and UDMH liquid propellant are used in many launch vehicles in foreingn countries.是什么意思_Two kinds of monolayer cobottom tanrs which store N2O4 and UDMH liquid propellant are used in many launch vehicles in foreingn countries.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句