Nantoka/空穴kòng xué空穴 (kòng xué) is a Chinese word meaning “electron hole (physics)”.Meanings1electron hole (physics)Characters in 空穴空kōng · empty穴xué · caveRelated words空empty空to empty空间space; room空气air太空outer space有空to have time (to do sth)天空sky空中in the sky航空aviation空军air force时空time and place空白blank spaceStudy Chinese with flashcards →