danmyeonjeok
cross-sectional area
aire de section transversale ; surface de section transversale
이 구조물의 단면적은 50 제곱미터입니다.
I gujo-mul-ui danmyeonjeogeun 50 jegobmiteo-imnida.
The cross-sectional area of this structure is 50 square meters.
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