绘图员用铅笔、丁字尺、三角板和比例尺在绘图板上绘图。
Draughtsmen make drawing on a drawing board using a pencil and at-square set square and scale.
利用几何画板绘图辅助数学教学，有着传统尺规所无法比拟的优越性。
The function of geometry drawing board in helping maths teaching is superior to the traditional rulers.
绘图员用铅笔、丁字尺、三角板和比例尺在绘图板上绘图。
Draughtsmen make drawing on a drawing board, using a pencil and at-square, set square and scale.
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