tracklaying

名词 n.
中文释义

英文释义

名词 n.
  1. The work that involves putting the track in place. uncountable
    — The renewal of track by cranes and special tracklaying machines which lift out entire 60 ft. lengths of old track and lay in pre-assembled 60 ft. lengths of new, allows the process of renewal to proceed at a considerably faster rate than possible by older methods.

词源

From track + laying.
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