| 1. | At low frequencies , such as 10 per sec. , pulsation is sensed rather than vibration .
在低频率（譬如每秒十次）时，所感觉到的是脉冲而非振动。 |
| 2. | Very little effort has been devoted to the experimental measurement of low frequency combustion response .
在低频燃烧响应的试验测定方面只做了很少的工作。 |
| 3. | The mask acts as a low frequency spatial filter whose effect is to enhance rendition of fine detail .
掩模就象一个低频空间滤波器，其效果是增强细节的重现。 |
| 4. | This effect is obvious at lower frequency band
这种效应在振动低频区段更为显著。 |
| 5. | Verification regulation of low frequency phaser shifter
低频移相器试行检定规程 |
| 6. | Test method for low frequency and spurious disturbances
低频与寄生干扰的试验方法 |
| 7. | Verification regulation of low frequency signal generator
低频信号发生器检定规程 |
| 8. | Acoustics - low frequency calibration methods of hydrophones
声学水听器低频校准方法 |
| 9. | Low frequency scattering from cylindrical shell with rib
平顶有肋柱壳低频散射特性研究 |
| 10. | Low frequency vibration measurement of offshore platforms
1海洋平台振动测试及振源分析 |
