• Said diameter plate composed of two pieces is installed in the slot on inner side of compasses' disk. The slide valve and turning handle are on the diameter plate for drawing circle precisely.

    圆规盘内侧壁设计了直径转动,直径片片组装进入转动槽,直径片设计有滑动转动,从而达到精确圆的目的。

    youdao

  • Said diameter plate composed of two pieces is installed in the slot on inner side of compasses' disk. The slide valve and turning handle are on the diameter plate for drawing circle precisely.

    圆规盘内侧壁设计了直径转动,直径片片组装进入转动槽,直径片设计有滑动转动,从而达到精确圆的目的。

    youdao

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