【超级火箭发动机的冰与火之歌】中国航天进入深空探测阶段。中国工程师攻克了利用液氢液氧作为燃料的技术难题，为火箭发动机提供了澎湃动力。China's space program has entered a new stage of deep space exploration, Chinese engineers have overcome the technical challenges by using liquid hydrogen and liquid oxygen as fuel to power rocket engines. http://t.cn/A6Cz3K35