【运输】履带端闸

on the track

germ line(Weismann 1865)germ track

endless TRACK(S) for exercising athletes

back tracking algorithm【计】;back-track algorithm【计】

track levelling and tamping machine

crosstalk【计】;inter track crosstalk【计】;interchannel crosstalk【通信】

fast-track procedure

metal track【车辆】