常见例句雙語例句In this paper, based on the analyzes of helical characteristics, ideal geometric models of cutting edges and helical grooves of nose burr are developed.通過分析刀刃的螺鏇特性，建立了球頭鏇轉銼刀刃及螺鏇槽的理想幾何模型。 返回 helical burr