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field lens
earth.sc. 向场; 电子透镜
met. 场透镜
oil 物镜
tech. 向场透镜; 野外用镜; 场透镜
field-lens
gen. ; 电子透镜; 物镜
field lens: 17 phrases in 5 subjects
Air defense1
Metallurgy1
Remote sensing1
Space1
Technology13