Lacking of fault samples is a knotty problem in the fault detection of complex systems such as Liquid-propellantRocket Engines (LRE).
在对类似于液体火箭发动机这种复杂系统的故障检测过程中，一个非常棘手的问题是缺乏故障类样本。
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This paper attempts to analyse the tendency to develop liquidpropellantrocket propulsion technology according to the requirements o launch vehicles and spacecrafts.
本文试图根据运载火箭和航天器的需要来分析液体火箭推进技术的发展趋势。
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To appreciate the unsteady environment existing in liquidpropellantrocket chambers it is necessary that the steady state be well understood.