穿越既有线  pass the exiting line

地铁既有线  existing Metro line; existing subway

既有线  existing tunnel; the Existing Subway; existing-railway; existing line; existing Metro line; existing railway lines; existing railway; existing track line; exiting railway; existing; existing railway line; existing lines; existing subway; the Existing Railway Line; existing railways; operated line

既有线测量  survey of existing line；survey of existing railway; survey of existing railway; existing railway surveys; survey of existing line

既有线车辆  vehicles on existing line

既有线复测  Repetition survey of existing railway

既有线改造  existing line reconstruct; rebuiding of the existing line; existing railway upgrading; exist-ing railway upgrading; Upgrading of Existing Lines; reform of the operated lines; rebuilding of existing electric-railway; Existing railway promotion

既有线列车运营  existed subway operation

既有线路  existing line; existing railway; existing lines

既有线隧道  existing line tunnel; existing tunnel

既有线站场测量  survey of existing station yard

跨越既有线  Cross the existing line

临近既有线  Adjacent to Existing Line

上跨既有线  existing line on the top

铁路既有线  Existing railway curve line; existing railways

下穿既有线  Going underneath Existing Railway

有线线路分配器  LTC:Londline Trunk Coutroller

有线有效加密算法  wired equivalent privacy algorithm

提速线路  speed rising line; Speed-raising Railway; Speed-increase line; raising speed railway; speed-raising railway line; speed-raising line; Speed raise railway line; Speed-rising line