two-way route

... two-way route 双向航线 two-way route 双向航道 ; 双向航路 ; 双向航线 ; 双程航路 Route Way 通道 ...

 two-way track

... two-way track 双向航道 two-way track 双向航道 one-way track 单向航道 ...

 double way channel

双向航道