bisector
n. [数] 二等分线;二等分物
例句
Jiang from hate exactly one bisector.
一江离恨恰平分。
This partition is called the bisector skeleton of the polygon.
这种划分就称为多边形的角分线骨架。
A perpendicular bisector of a chord passes through the centre and bisects the arc.
弦的垂直平分线经过圆心,并且平分弦所对的两条弧。