In addition to this high engine speed concept, the optimized airflow rate considerably improves performance.
除了这个高转速的概念、优化气流速度有较大提高性能。
The paper introduces the basic concept of speed-different mode signal system.
介绍速差式信号制式的基本概念；
The paper introduces the basic concept of speed-different mode signal system.
介绍速差式信号制式的基本概念；
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