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  • translating a picture

    Activity

    zhangkm

  • superposition of sine waves

    Activity

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  • 彩带

    Activity

    zhangkm

  • optics

    Book

    zhangkm

  • 3D

    Activity

    zhangkm

  • boxplot

    Activity

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  • barchart

    Activity

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  • roll the arc

    Activity

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  • Animation

    Activity

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  • radio buttons

    Activity

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  • sequence

    Activity

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  • Fractional numberal

    Activity

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  • GGB

    Activity

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  • GGB

    Activity

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