suro cheukryang
hydrography
hydrographie (spécificité technique)
수로 측량은 수역의 깊이와 형태를 측정하는 중요한 작업입니다.
suro cheuglyangeun suyeog-ui gipiwa hyeongtaereul cheugjeonghaneun jungyohan jag-eobimnida.
Hydrography is an important task that measures the depth and shape of water bodies.
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