例句與造句

1. Electrically small antennas, high directivity and tunable operational frequency are produced with negative magnetic permeability.
2. In practice an electrically small antenna is one that is operated at a frequency below its natural resonance.
3. Therefore, the monopole-SRR antenna becomes an acceptable electrically small antenna at the SRR's resonance frequency.
4. A single negative material resonator, obtained with an SRR, can produce an electrically small antenna when operating at microwave frequencies, as follows:
5. An "'electrically small antenna "'is defined as an antenna with a volume smaller than a H . A . Wheeler.
6. It's difficult to find electrically small antenna in a sentence. 用electrically small antenna造句挺難的