English translation for "第二级助推"

second-stage boost

Similar Words：

"第二级银行" English translation, "第二级预防" English translation, "第二级运载火箭" English translation, "第二级再热器" English translation, "第二级制度安排" English translation, "第二级装药" English translation, "第二级子例行程序" English translation, "第二脊椎骨" English translation, "第二技术部" English translation, "第二季" English translation