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反射透镜
 反射透镜
tech. reflection lens
| 光学
 光学
avia. photology
lab.eq. optics
oil photo logy

to phrases
反射透镜
tech. reflection lens
反射透镜
tech. mirror lens
反射透镜: 19 phrases in 6 subjects
Air defense1
Automobiles2
General2
Space1
Technology12
Telecommunications1