發光二極管

light-emitting diode / LED

to send out / to show (one's feeling) / to issue / to develop / to make a bundle of money / classifier for gunshots (rounds)

to shine

light / ray / CL:道[dao4] / bright / only / merely / to use up

photodiode / light-emitting diode (LED)

two / 2 / (Beijing dialect) stupid

diode / vacuum tube

extremely / pole (geography, physics) / utmost / top

variant of 管[guan3]

surname Guan

to take care (of) / to control / to manage / to be in charge of / to look after / to run / to care about / tube / pipe / woodwind / classifier for tube-shaped objects / particle similar to 把[ba3] in 管...叫 constructions / writing brush / (coll.) to / towards