资料的内容是实现旋转机械同步整周期采样的数据采集系统相关文献资料，包括鉴相信号如何倍频，机械振动信号相位如何检测等的实现方法。-Information content is for rotating mechanical synchronization synchronous sampling data acquisition system-related documents, including the Kam-believe number to harmonic mechanical vib