例句與造句

1. Multiplication by 1 / 2 is required to properly describe the power flow since the magnitudes of \ mathbf { E _ \ mathrm { m } } and \ mathbf { H _ \ mathrm { m } } refer to the " peak " fields of the oscillating quantities.
2. It's difficult to find oscillating quantity in a sentence. 用oscillating quantity造句挺難的