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相对速度 xiāngduì sùdù
avia. velocity ratio
compr. relative speed
space velocity relative
wind. relative velocity
相对运动速度
tech. speed of relative movement
相对 速度
: 51 phrases in 17 subjects
Agriculture2
Air defense1
Automobiles2
Aviation5
Chemistry1
Earth sciences2
Electronics2
Explosives and Explosive Ordnance Disposal1
Metallurgy5
Oil / petroleum1
Research and development1
Shipbuilding1
Space6
Sports1
Swimming2
Technology17
Wind Energy1