例句與造句

1. Pulsating magnetic fields induce muscle contractions in the pelvic floor to build strength.
2. A pulsating magnetic field at the bottom of the rotor, similar to that used in an electric motor, is able to spin it quickly enough that the U-238 is thrown towards the edge.
3. It's difficult to find pulsating magnetic field in a sentence. 用pulsating magnetic field造句挺難的