적혈구 속에 있는 산소 운반 단백질인 헤모글로빈의 약어.
An abbreviation for hemoglobin, the protein in red blood cells that carries oxygen throughout the body.
예문:
"The doctor ordered a blood test to check the patient's Hb levels."
"Low Hb levels can be an indication of anemia."
일반적인 필기용으로 쓰이는, 중간 정도의 경도와 흑도를 가진 연필심의 등급.
A grade of pencil lead that is medium in hardness and blackness, commonly used for general writing.
예문:
"Most students prefer using an HB pencil for their standardized tests."
"The artist used an HB lead for the initial light sketches."
많은 양의 폭탄을 싣고 투하할 수 있도록 설계된 대형 항공기인 중폭격기의 약어.
An abbreviation for heavy bomber, a large aircraft designed to carry and drop a significant amount of bombs.
예문:
"The HB squadron was deployed for the strategic mission."
"Historical records detail the impact of HB units during the war."