optical mark reader
光学标志阅读器
光标示阅读机
光学标志读出器光学指示读出器
光学符号阅读机
光学符号读取
(OCR) Optical Character Recognition Equipment(OCR)
(OTDR) Optical Time-Domain Reflectometers(OTDR)
1 550 nm optical fiber transmission system
1 550 nm optical transmission
1 550nm Optical Transmission
1550 nm Optical network
157nm optical lithography
157um optical lithography
2-D optical frequency-time coding
2-D optical orthogonal codes(OOC)
2D optical sensor array
2-D optical sensor array
380 nm aerosol optical depth
3D optical disc storage