例句與造句

1. Taking the curl of the curl equations, and using the curl of the curl identity we obtain the wave equations
2. The "'loss tangent "'is then defined as the ratio ( or angle in a complex plane ) of the lossy reaction to the electric field "'E "'in the curl equation to the lossless reaction:
3. It's difficult to find curl equation in a sentence. 用curl equation造句挺難的