反映滚动轴承故障的特征周期信号处于较低频带内，容易被噪声淹没，难以检测。
The fault characteristic periodic signals of the rolling bearing are in low frequency band and often buried in the noise.
它能精确测量任意波形的低频模拟周期信号并同时显示其有效值和分贝值。
It not only can measure the discretionary low frequency analog signals exactly, but also can simultaneously show their virtual values and decibels.
实验结果表明该检测系统可有效地避开空间的电晕及周期性脉冲干扰信号等低频段干扰。
The results indicate that the UHF system of detecting PD can effectively detect partial discharge and avoid outer corona interfere and Periodic pulse interfere.
它能精确测量任意波形的低频模拟周期信号并同时显示其有效值和分贝值。具有智能量程转换功能。
It not only can measure discretionary low-frequency analog signals exactly, but also can show their virtual values and decibels synchronously, which has the intelligent selectiveness of measure.
它能精确测量任意波形的低频模拟周期信号并同时显示其有效值和分贝值。具有智能量程转换功能。
It not only can measure discretionary low-frequency analog signals exactly, but also can show their virtual values and decibels synchronously, which has the intelligent selectiveness of measure.
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