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FRONTPAGE

Rules are changing

作者:21ST
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用尺也可以画出圆来。

TIRED of using a needle compass (圆规) to draw circles? Some American designers have the idea of Ring Ruler. You can lock the two ends (末端) of the soft ruler together to draw a circle. The scales (刻度) on the ruler tell diameters (直径) for any size.
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