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optical tracking
 optic tracking
tech. 光学跟踪; 光跟踪
 optical tracking
avia. 光学追踪
space 光学跟踪
| theodolite
 theodolite
gen. 经纬仪; 子午仪; 中星仪
expl. 经纬仪
hydroel.st. 光学经纬仪

to phrases
optical tracking
avia. 光学追踪
space 光学跟踪
tech. 光跟踪
optic tracking
tech. 光学跟踪; 光跟踪
optical tracking theodolite
: 86 phrases in 12 subjects
Air defense5
Automobiles1
Aviation8
Cartography1
Earth sciences2
Electronics19
Missiles2
Navigation1
Shipbuilding1
Space30
Technology15
United States1