Long Optical Length Thin layer Spectroelectrochemistry

Pollen tube length

Tube length

Heat Exchange Tube and Tube Sheet

Tube in Tube Structure

Tube to Tube Sheet

Tube-in-tube

welding between heat exchanging tube and tube sheet

Tube—in—tube

anchorage length and lap length

ratio of pulse length to the total cycle length

span length of length bar

(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

1×N optical switch

1550 nm Optical network

157nm optical lithography