| 1. | Of 30 to 50 , an emittercollector breakdown voltage
为5v ，晶体管的截止频率 |
| 2. | The following is a partial list of lc lowpass filters and their specifications that we have produced , arranged by center frequency
以下为生产过的lc低通滤波器部分产品规格（按截止频率排序） 。 |
| 3. | The tm01 mode of the coaxial bwo has no cut - off frequency , which is similar to the tem mode in the conventional coaxial waveguide
这是因为同轴慢波结构的tm01模式有类似于tem的性质,没有截止频率。 |
| 4. | As a consequence of this simulation , however , the cut - off frequency of the resulting low - pass is 70 . 7 per cent of the specified bandwidth , and not 50 per cent
然而这种模拟的结果是：最终的低通截止频率为特定带宽的70 . 7 % ，而非50 % 。 |
| 5. | The specification is that the cutoff frequency must be more than 15mhz , the maximum passband ripple must be 0 . 2db and the minimum stopband attenuation must be 40db
该滤波器要求截止频率大于15mhz ，通带最大纹波为0 . 2db ，阻带最小衰减为40db 。 |
| 6. | The relationship between time delays and cutoff frequency of open loop and the result that the longer the delays , the lower the cutoff frequency of open loop and the tracking precision are educed
得出延迟越大，系统可实现的开环截止频率越小，跟踪精度越低的结论。 |
| 7. | When the frequency is below than the cut - off frequency of the waveguide , the field intensity decays exponentially with distance along the waveguide and the wave is called evanescent wave
当频率低于波导的截止频率时，电磁波在波导中与距离成指数规律衰减，是一种消失波。 |
| 8. | This is because the bpf is a two - pole filter ; at its cut - off frequency ( when output is 50 per cent ) the output power of a true lpf of the same cut - off would be in fact 70 . 7 per cent
这是因为带通滤波器是一个两极滤波器；在其截止频率下（输出为50 % ） ，真正的具有相同截止频率的低通虑波器的输出功率事实上为70 . 7 % 。 |
| 9. | When frequency slightly higher than cutoff , using perturbation method it is to know that tunnel wall wet make attenuation of electromagnetic wave lower not only in rectangular tunnel but also in circular tunnel
当频率略高于隧道截止频率时利用微扰法可知：不论是矩形隧道还是圆形隧道，隧道壁潮湿使电磁波的衰减率降低。 |
| 10. | It was the result from that the width of spectrum of the input em pulse packet was too wide , the spectrum included rather strong frequencies being above the cut - off frequency which have not been decayed
分析认为，这是由于输入电磁波包脉冲的频谱太宽，存在较强的高于截止频率的频率，这部分频率未被衰减而直接传输所致。 |
