연필심의 경도를 나타내는 단위 중 하나로 매우 단단하여 연한 선을 긋는 데 사용됨
A grade of pencil lead hardness, often synonymous with 2H, indicating a very hard lead that produces light, fine lines.
예문:
"Technical illustrators prefer using an HH pencil for initial layout sketches to keep the paper clean."
"The artist switched to an HH lead to achieve the subtle, light shading required for the background."
국제항공운송협회(IATA)에서 부여한 소말리 항공의 2자리 항공사 식별 코드
The International Air Transport Association (IATA) airline designator for Somali Airlines.
예문:
"The flight schedule listed the carrier as HH, indicating the route was operated by Somali Airlines."
"Ground crew identified the incoming aircraft by its HH designator on the radar screen."