对发动机气缸压力和瞬时转速的分析和研究是获取发动机工作情况和故障原因的重要手段；
The analysis and research of engine cylinder pressure and transient speed is the important method to obtain the working condition and breakdown reason of engine.
对发动机气缸压力和瞬时转速的分析和研究是获取发动机工作情况和故障原因的重要手段；
The analysis and research of engine cylinder pressure and transient speed is the important method to obtain the working condition and breakdown reason of engine.
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