| 1. | An lpf can be simulated by setting the bpf ' s centre frequency to zero
将带通滤波器的中心频率设置到0 ，就可以模拟低通滤波器。 |
| 2. | Bpf band - pass filter
带通滤波器 |
| 3. | A ka - band bpf would be developed and used in the rardar system
同时制做一只ka波段的波导滤波器，用于毫米波合成孔径雷达系统中。 |
| 4. | Bpf band pass filter
带通滤波器 |
| 5. | Bpf band pass filter
带通滤波器 |
| 6. | Under special conditions a bpf may also be used as an lpf or as an hpf
在特殊条件下，带通滤波器也可以用作低通滤波器或高通滤波器。 |
| 7. | Objective to evaluate the diagnosis and therapy of post - pneumonectomy bronchopleural fistula ( bpf )
摘要目的探讨肺切除术后支气管胸膜瘘的诊断与防治特点。 |
| 8. | Conclusion the key therapy for post - pneumonectomy bpf is to close the stoma and thoroughly eliminate the vomica
结论支气管胸膜瘘重在预防，治疗的关键在于封闭瘘口，彻底消灭脓腔。 |
| 9. | It also overcomed the dificulty to realize characteristics bpf with fractional bandwidth greater than about 5 % in the form of multi - metal insert waveguide filter
既提高了滤波器的阻带性能，又避免了单纯的多膜片结构能实现的滤波器带宽较小的缺点。 |
