frequencies的例句（frequencies在句子中的用法）

• The characteristic values are the filter's middle frequencies and their bandwidths. 滤波器有中间频率和带宽这两个特征值.
• Sound - cancelling works by analysing any unwanted frequencies and then producing counteracting ones. 通过分析所有不需要的声音频率,然后制造相应的部分替代,这样噪声就消除了.
• The electromagnetic spectrum covers an enormous range of frequencies and energies. 电磁波谱包括极大的频率和能量范围.
• If the frequencies are low, this approach cannot be used. 若频率很低时, 这种方法就不能使用.
• 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.
• Twisted - pair conductors are sufficient if frequencies of interest are below a few hundred kilohertz. 如果信号频率低于几百kHz,则使用双绞线就已足够.
• A wavefront at high radio frequencies or optical frequencies impinging on the atmosphere is distorted. 高射电频率或光学频率的波阵面进入大气时受到畸变.
• Of an electronic circuit or device; having an output proportional to input; amplifying or attenuating all frequencies equally. 说明一种电子电路或器件, 其输出和输入成比例, 对所有的频率都放大或衰减同样的倍数.
• ...UHF frequencies of around 900 megahertz. 大约900兆赫的超高频率
• For an initial service, a 10 megahertz-wide band of frequencies will be needed. 初始服务需要10兆赫宽的频带。