常見例句雙語例句In this paper, based on the analyzes of helical characteristics, ideal geometric models of cutting edges and helical grooves of nose burr are developed.通過分析刀刃的螺旋特性，建立了球頭旋轉(zhuǎn)銼刀刃及螺旋槽的理想幾何模型。 返回 helical burr