Pull out of the wire, precise size, smooth surface, and the use of drawing equipment and mold is simple, easy to manufacture.
拉出的丝，尺寸精确，表面光洁，且所用拉拔设备和模具简单，制造容易。
There are many method to design irregular smooth curved surface. The unique feature of topological maps axe simple, accurate and convenient for calculation.
设计不规则光滑曲面的方法很多，但拓扑变换法以其作图简单、准确、计算方便而独具特色。
The cutter is simple in structure, novel in design, and is greatly convenient for cutting the adhesive tape and the cutting surface is orderly and smooth.
本发明结构简单、设计精巧，大大方便了胶带的裁断，且裁断面平整光滑。
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