A.焦耳/米3 B.亨利/米3 C.安培/米3 D.伏特/米3
A.電荷之和 B.電流之和 C.非零常數(shù) D.零
A.散度場(chǎng) B.無(wú)散場(chǎng) C.旋度場(chǎng) D.無(wú)旋場(chǎng)