Two kinds of monolayer cobottom tanrs which store N2O4 and UDMH liquid propellant are used in many launch vehicles in foreingn countries.

• 国外较多的运载火箭上，采用二种类型的单层共底贮箱存放N2O4（四氧化二氮）、UDMH（偏二甲肼）液体推进剂等。