noun 다운로드 🔗공유 조도 The luminous flux incident on unit area of a surface; measured in lux or lumens. Examples : "The illuminance on the desk was too low, making it difficult to read. " 책상 위의 조도가 너무 낮아서 읽기가 어려웠다. physics energy technology AI와 채팅어휘 게임독해 연습