光耦合器 guāng'ǒuhéqì optocoupler, photocoupler Origin Definitions Defs Strokes Stroke Words Sentences Sents 光 guāng noun light light; ray; beam of light耦合 ǒuhé coupling (physics/electronics) The interaction between two or more systems or circuits that allows energy to transfer from one to the other; to be coupled.器 qì noun utensil device; tool; utensil; ware