如图所示一带电粒子只受电场力从a飞到b径迹如图中虚线所示下列说法正确的是 A.粒子带负电 b.粒子加速度不断变小 c.粒子在a点时 Template




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tomski如图所示一带电粒子只受电场力从a飞到b径迹如图中虚线所示下列说法正确的是 a.粒子带负电 b.粒子加速度不断变小 coloring