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optic fibre
 optics fibre
el.mach. 光导纤维
| proof
 proof
fin. 校对
hydroel.st. 证明; 证据; 验证
interntl.trade. 对证; 校样; 检标
| tester
 tester
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optics fibre
el.mach. 光导纤维
optic fibre: 33 phrases in 7 subjects
Air defense1
Aviation4
General2
Information technology1
Metallurgy1
Space5
Technology19