a measuring instrument for recording the depth and rapidity of breathing movements
A Spirograph is a geometric drawing toy that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids. It was developed by British engineer Denys Fisher and first sold in 1965.
例句与用法
1.
The rings and wheels can be combined one and one to create different " spirograph " drawings 可以组合环和轮（一对一）以创建不同的“螺旋形”绘图。
2.
Removing spirographs to remove a drawing from the drawing area , drag and drop it off the drawing surface 若要从绘图区中移除绘图，请将它拖离绘图图面。
3.
Copying and dragging spirographs completed spirographs can be dragged to different locations on the drawing area using the mouse 可使用鼠标将完成的螺旋形拖动到绘图区的不同位置。
4.
The bulk of the mass is spread out , forcing stars to trace a spirograph - like rosette : an ellipse that does not close on itself but gets offset each time the star completes one revolution [ see box at right ] 整体质量分散开来，迫使恒星运行方式如旋转绘图盘所画出的花瓣状螺线：那不是每圈都会封闭起来的椭圆，恒星绕行一周后，轨道并不接合便又重新开始下一周的运动（见右方整理轨道秩序） 。
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