• 绘图铅笔丁字尺三角板比例尺绘图板上绘图

    Draughtsmen make drawing on a drawing board using a pencil and at-square set square and scale.

    youdao

  • 绘图铅笔丁字尺、三角板比例尺绘图板上绘图

    Draughtsmen make drawing on a drawing board, using a pencil and at-square, set square and scale.

    youdao

  • 绘图铅笔丁字尺、三角板比例尺绘图板上绘图

    Draughtsmen make drawing on a drawing board, using a pencil and at-square, set square and scale.

    youdao

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