engineering district；maintenance of way section；track division；track district；track maintenance division

jointless line；continuously welded rail track；jointless track

non-NTDS track {dummy track}

replacing and laying track with track panel

track to track fusion

track-to-track association

track-to-track fusion

track-to-track moving time

transforming single track into double track

double - track existing single track line

2D movable-bed model

accumulative total movable

Act of Secured Transactions for Movable Property

all-movable

all-movable control

All-movable panel

all-movable tail

allowable maximum spacing between movable supports

Angle pin mechanism on the movable mould