By using dual timing method the calibrator for calibrating coefficient of instrument of pulsed flow transducer is designed.

利用双时间法设计了用于检定脉冲型流量传感器仪表系数的检定仪。

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This paper analysed the necessity of dynamic valve timing measurement and introduced the principle of the instrument developed by us to measure static and dynamic valve timing.

本文分析了迸行配气正时动态测定的必要性，介绍了我们研制的配气正时仪及对发动机进行动、静态测定的情况。

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