找出了隔膜式压缩机气阀运动规律，可定性地分析与判断气阀的综合性能。
Consequently the paper get the movement rule of compressor's air-valve, according to the condition, the integrative capability of air-valve can be analyzed qualitatively.
可以将三阶谱的峰值作为判断气阀是否漏气的一个诊断特征量，同时也为诊断内燃机气阀的早期漏气故障提供了依据。
The peak value varies in different fault conditions and it can be used as a characteristic for diagnosing leakage fault of exhaust valve, the fault in initial stages can also be diagnosed.
可以将三阶谱的峰值作为判断气阀是否漏气的一个诊断特征量，同时也为诊断内燃机气阀的早期漏气故障提供了依据。
The peak value varies in different fault conditions and it can be used as a characteristic for diagnosing leakage fault of exhaust valve, the fault in initial stages can also be diagnosed.
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