7．图示为一列在均匀介质中沿x轴正方�传播的简谐横波在某时刻的波形图波速为2 ms则 A．质点p此时刻的振动方�沿y轴负方� B．p点 Sketch Coloring Page

7．图示为一列在均匀介质中沿x轴正方�传播的简谐横波在某时刻的波形图波速为2 ms则 A．质点p此时刻的振动方�沿y轴负方� B．p点 Template

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tomski7．图示为一列在均匀介质中沿x轴正方�传播的简谐横波在某时刻的波形图波速为2 ms则 coloring

7．图示为一列在均匀介质中沿x轴正方�传播的简 谐横波在某时刻的波形图波速为2 m/s则 A．质点P此时刻的振动方�沿y轴负方� B．P点 sketch template

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图甲所示为一块透明的光学材料的剖面图在其上建立直角坐标系xOy设该光学材料的折射率沿y轴正方��生变化现有一单色光a从原点O以某一入射角 sketch template

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