multiengine airplane 多引擎飞机
This is an important rating for those who desire to accumulate additional multiengine experience.
对于想要积累更多额外多引擎飞行经验的学员而言，这是一个非常重要的等级。
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In the paper, an experimental bench which simulating multiengine tail gas heat source is researched and built.
研究建立了一个模拟多种发动机尾气热源的试验台。
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