The ortho cone helicoid was used interrsect intercept by the ortho cone helicoid and the cylinder.
正圆锥螺旋面是正圆柱螺旋面被同轴正圆锥面截得.
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The surface obtained when every point on the edge generates an involute is called helicoid.
表面获得了在边缘的每点什么时候引起一断开线叫断开线螺旋面.
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AIM : To use three dimensional printing ( 3 DP ) technology to prepare zero - order controlled - release tablets of helicoid.
目的: 应用三维 打印技术 制备豆腐果苷零级控释片.
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