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 association
track-to-track moving time
transforming single track into double track
double - track existing single track line
Rod control and rod position indication system
shim follow-up rod (=shim rod)
split tie rod type tie rod linkage
sucker rod string rod column
up-and-down rod (upright rod)
Ⅰ-type slab ballastless track