frequencies例句
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。
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.
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.