电影一区二区三区_亚洲激情二区_亚洲欧洲成人av每日更新_91超碰国产在线

--BBS主題帖: 高頻版圖布線理論基礎（七）　

• 法拉第定律: 時變磁通量穿過閉合的電路會在電路中感應出電動勢. Lenz's Law:the emf is an equal and opposite reaction to the flux change. 楞次法則: 電動勢相等且相反于通量的變化. Ampere's Law:the line integral of the magnetic field around a closed path equals the net current...
• 2011-12-16