A formula for analyzing the low frequency instability of the tube grain engine is derived through theoretical study.
通过研究导出一个分析管状装药发动机低频不稳定性的关系式。
Through theoretical study and learning from international experience, a way to solve this dilemma is explored.
并通过深入的理论探讨和对国际经验加以借鉴，力求探索出解决这种困境的出路。
Through theoretical study and laboratory experimentation, the feasibility of this automatic system concept has been verified.
通过理论分析与实验室试验确认此自动控制方案是可行的。
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