| 1. | Frequency modulation does not allow static to creep in .
频率调制不允许静电干扰混入。 |
| 2. | Telegraphy using frequency modulationnarrow band direct printing
频率调制发射窄带印字系统 |
| 3. | Frequency modulator demodulator trainer
频率调制调解学习套件 |
| 4. | Pulse frequency modulation pfm
脉冲频率调制 |
| 5. | Pfm pulse frequency modulation
脉冲频率调制 |
| 6. | Pl pulse frequency modulation
脉冲频率调制 |
| 7. | The pfm technology includes two kinds modes : constant width pfm and swfm
脉冲频率调制又包括了两种方式，即等宽pfm和swfm 。 |
| 8. | The pfm as the key technology in the pfm optic transmitter is discussed
分析了pfm光发射机设计中的一项关键技术，即脉冲频率调制。 |
| 9. | The frequency modulation range is 1145mhz to 1250mhz , and the frequency step is 80khz
系统频率调制范围为1145 1250mhz ,步进为80khz 。 |
| 10. | Direct measurement of ch4 absorption spectrometer by means of tunable frequency modulated diode laser
激光频率调制光谱法测量甲烷的吸收光谱 |
