The method of Atomic Fluorescence Spectrum is with saving time and power, high accuracy in testing the content of As, Sb, Bi and Hg.
用原子荧光光谱法测定含量高的砷、锑、铋、汞时可采用稀释方法，省时省力，精确度和精密度都达到了测定要求。
Applying the order bi-spectrum in the analysis of engine noise signals shows that it can extract the fault characteristics and realize the state monitoring.
运用此方法对内燃机主轴承不同间隙下的噪声信号进行分析，结果表明，此方法能有效地提取故障的特征，实现状态监测。
In this paper, time series bi-spectrum analysis for fault diagnosis of speed-regulating valve is proposed to study a new fault detection method for the hydraulic system.
研究液压系统的一种新的故障检测方法，利用时间序列双谱分析实现调速阀故障诊断。
In this paper, time series bi-spectrum analysis for fault diagnosis of speed-regulating valve is proposed to study a new fault detection method for the hydraulic system.
研究液压系统的一种新的故障检测方法，利用时间序列双谱分析实现调速阀故障诊断。
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