특설늑골

Web Frame, Strong Frame

특설보

Web Beam, Strong Beam

특설창내빔

Widely Spaced Hold Beam

특수강

Special Steel

특수작업선

Special Service Ship

특수하역등

Enclosed Portable Type Cargo Light

틀굽힘시험

Guided Bend Test

틀절단장치

Guided Cutting Apparatus

틈메움쇠

Distance Piece

틈새

Gap between Joint, Clearance, Breadth of Joint