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只有大小沒有方向的物理量叫標量,例如溫度、比重、熱量、能量等.而既有方向又有大小的物理量叫矢量.例如速度、加速度、力等.所以磁通量只是磁通過的多少,沒有方向,定是標量.而磁感應強度大小、方向都有,從定義就能看出來!還要求用左右手定則來判斷方向呢!
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