例句與造句

1. Ions may also be ejected by the resonance excitation method, whereby a supplemental oscillatory excitation voltage is applied to the endcap electrodes, and the trapping voltage amplitude and / or excitation voltage frequency is varied to bring ions into a resonance condition in order of their mass / charge ratio.
2. It's difficult to find oscillatory excitation in a sentence. 用oscillatory excitation造句挺難的