coupling mechanism between upper level and low level jet

fiscal system at county level and township level

interaction between upper level and lower level

municipal level and county level

1 310 nm cable TV system

1 550 nm fiber-optic ring network

1 550 nm fiber-optical join-network from city to county

1 550 nm metropolitan area network

1 550 nm optical fiber transmission system

1 550 nm optical transmission

110 nm Technology Node

1315 nm emission spectra

1338 nm single wavelength

1338nm

1342 nm Laser

1342nm

1480 nm high power laser diode for fiber amplifier-pumping

1550 nm light transmission of sub-carrier modulate trunk

1550 nm Optical network

1550 nm photoemission machine