京东 11.11 红包
(new)63完全弹性碰撞(1)[流畅版]
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(new)64完全弹性碰撞(2)[流畅版]
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(new)60动能与弹性势能的转化[流畅版]
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(new)14用形变演示器演示形变产生弹力[流畅版]
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(new)29惯性（3）[流畅版]
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(new)69碰撞球(3)[流畅版]
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(new)163全反射（一）[流畅版]
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(new)101起电盘[流畅版]
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(new)86表面张力现象(2)[流畅版]
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(new)67碰撞球(1)[流畅版]
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(new)28惯性（2)[流畅版]
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(new)81空气在绝热压缩时温度升高[流畅版]
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(new)73反冲(3)[流畅版]
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(new)41曲线运动中速度的方向[流畅版]
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(new)106金属网罩对外电场的屏蔽[流畅版]
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(new)30牛顿第一定律[流畅版]
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(new)47弹簧振子的振动[流畅版]
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(new)179光的偏振现象（2）[流畅版]
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(new)55受迫振动和共振（2）[流畅版]
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(new)96带电体吸引轻小的物体[流畅版]
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(new)70单摆小车[流畅版]
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(new)20滚动摩擦与滑动摩擦的比较[流畅版]
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(new)147横波的形成和传播[流畅版]
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(new)48简谐振动的图象[流畅版]
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(new)54受迫振动和共振（1）[流畅版]
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(new)161光的反射定律[流畅版]
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(new)144变压器的结构[流畅版]
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(new)37失重[流畅版]
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(new)176单孔的衍射现象[流畅版]
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(new)25共点力的平衡条件[流畅版]
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(new)56用示波器观察发声物的振动[流畅版]
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(new)191激光[流畅版]
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(new)02.数字计时仪介绍[流畅版]
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(new)88毛细现象(1)[流畅版]
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(new)157多普勒效应[流畅版]
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(new)18验证滑动摩擦定律[流畅版]
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(new)98库仑扭称[流畅版]
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(new)91流体的压强和流速关系[流畅版]
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(new)182X射线管[流畅版]
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(new)162光的折射定律[流畅版]
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(new)166光通过棱镜时的色散[流畅版]