Root Gap, Root Opening

뿌리간격

Root Penetration

뿌리용입

Root Cavitation

뿌리캐비테이션

Relative Emergence

상대건현

Relative Bearing

상대방위

Relative Speed

상대속력

Relative Wind Velocity

상대풍속

Rise of Floor, Deadrise

선저기울기

Revenue Cutter

세관감시선

Rock Cutter

쇄암선