R You go around a circle which has radius r.
你绕圈的半径为。
Thus, polygon draws a 50-sides polygon that approximates a circle with radius r.
polygon画一个50边的多边形，来近似做一个半径为r的圆。
The staple product "Bosimei" fibrous vitrolite is a crystallization of several years R&D of our company and an innovative product in the ceramic circle.
主力产品“博斯美”纤瓷板，系本公司经数年精心研究开发的结晶成果，是陶瓷界的一大革新产品。
The staple product "Bosimei" fibrous vitrolite is a crystallization of several years R&D of our company and an innovative product in the ceramic circle.
主力产品“博斯美”纤瓷板，系本公司经数年精心研究开发的结晶成果，是陶瓷界的一大革新产品。
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