hú xián ㄏㄨˊ ㄒㄧㄢˊ 弧弦 谓开弓张弦。 汉 桓宽 《盐铁论·和亲》：“丁壮弧弦而出鬭，老者超越而入葆。”
在颈椎侧位片上测量椎体前缘序列弧线的弧弦距。
The distance of arc between vertebral anterior edge sequences was measured on lateral films of cervical vertebra.
在轨迹处理中，提出基于弦长和弧长关系的伪轨迹处理方法，得到合理的运动轨迹。
A pseudo-trajectory processing method based on the relationship between chord lengths and arc lengths is proposed to obtain reasonable trajectories.
弦的垂直平分线经过圆心，并且平分弦所对的两条弧。
A perpendicular bisector of a chord passes through the centre and bisects the arc.
应用推荐