rocket-based combined-cy-cle 基本例句 冲压发动机 At first, the thermodynamic calculation of Solid Ducted Rocket is researche.在此基础上，首先对固体冲压发动机热力计算展开了研究分析。 The water ramjet based on the reaction of water and fuel is a new kind of underwater engine.摘要基于水与金属燃料反应的水冲压发动机是一种新型的水下动力装置。