shipping route [= route]

trace and ultra trace element

trace-to-trace coherence criterion

trace-to-trace correlation

trace-to-trace phase distortion

trace-to-trace time delay

fishing migration route [= migration route

pressurized escape route＝ pressurized evacuation route

railway route selection；railway location；approximate railway location；location of railway route selection

(14)C trace

(Mn+Zn)-LS trace fertilizer

~(15)N trace

~(99)Tc~m trace

125 Iodine Trace

137Cs trace technique

141Ce trace

14C-isotope trace technique

15 N trace

15N trace