复线

fù xiàn

释义

1. multiple track (e.g. rail)
2. multilane (e.g. highway)
3. (math.) complex line

包含 复线 的词语

• 来复线 lái fù xiàn: rifling (spiral lines on inside of gun barrel imparting spin to the bullet)

复线 的构成词

• 线 xiàn: thread
• 复 fù: to go and return