bisector,-trix

[數]平分線; 平分面; 二等分物; 特殊用法:; acute bisector; [采礦]銳角等分線; average bisector; 平均二等分線; external bisector; 外(平)分角線, 外(角)平分線; internal bisector; 內分角線, (內)角平分線; perpendicular bisector; 中垂線