例句與造句

1. Waffle-iron filters are, in essence, low-pass filters but like all waveguide devices will not transmit anything below the waveguide cutoff frequency.
2. This misled him somewhat; some of his experiments failed because he was not aware of the phenomenon of waveguide cutoff frequency found in Lord Rayleigh's work.
3. It's difficult to find waveguide cutoff frequency in a sentence. 用waveguide cutoff frequency造句挺難的