연필의 단단한 정도를 나타내는 기호 중 하나로, 매우 높은 경도를 의미한다.
A marking on a pencil indicating a high level of hardness, specifically triple hard.
예문:
"The architect selected an hhh pencil to draft the initial structural outlines."
"Because hhh lead is so hard, it produces a very light grey mark on the paper."
"You should use an hhh pencil if you want to avoid smudging your detailed sketches."
'세 배로 단단함'을 의미하며, 특정 등급 연필심의 물리적 특성을 가리킨다.
A term meaning 'treble hard', used to describe the physical property of a lead grade.
예문:
"The lead is described as treble hard, or hhh, in technical manuals."
"A treble hard lead ensures that the pencil point stays sharp for a long time."
"The term hhh stands for treble hard in the grading system."