VF

VF

1. ■ =Variable Frequency 可变频率;

2. ■ Velocity Factor 速度系数;

3. ■ Very Fine 极细的;

4. ■ Video Frequency 视频;

5. ■ Viscosity Factor 粘度因数[系数];

6. ■ Vision Frequency 视频;

7. ■ Visual Field 视野;

8. ■ Voice Frequency 音频