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1·Power section can be tuned to change pressure pulse frequency.

动力装置功率可调，进而可改变压力脉冲频率；

2·A pulse frequency modulation (PFM) with discrete frequency is designed.

设计了一种离散频率的PF M控制方式。

3·Varying frequency is used to control AC pulse frequency in normal welding state.

正常焊接状态时变频控制交流脉冲频率。

4·However, LH pulse frequency and LH pulse amplitude were unaffected by treatments.

但LH的脉冲频率和幅度不受上述处理的影响。

5·It could be used to detect pulse frequency and provided with circuit for pulse cycle detection.

除了可以测脉冲频率外，还有专门测脉冲周期的电路。

6·Then the principle of Pulse Width Modulation and Pulse Frequency Modulation is analyzed in detail.

之后阐述了脉冲宽度调制和脉冲频率调制的工作原理。

7·It trans - forms the speed signal into pulse frequency signal to measure speed and indicate the speed.

本文给出了一种齿轮测速的方法，将转速信号转化为脉冲频率信号进行测量和显示。

8·The spread and compress of millimeter wave pulse frequency spectrum will happen in Doppler Effect during rain.

在降雨条件下，多普勒效应后毫米波脉冲频谱发生展宽和压缩。

9·As the increasing of pulse voltage and pulse frequency increasing. the refining effect was much more obviously.

随着脉冲电压的升高、脉冲频率的增加，细化效果更加显著。

10·In addition, the changes of the laser pulse width and pulse frequency to affect the weld width were investigated.

此外，对激光脉冲宽度及脉冲频率对焊缝宽度的影响作了深入研究。