다층안전유리

Multiplex Safty Glass

다층용접

Multi-layer Weld

단거리국제항해

Short International Voyage

단늑판

Short Floor Frame

단동기관

Single Acting Engine

단락 아크용접

Short Circuiting Arc Welding

단락전류

Short Circuit Current

단면

Section

단면계수

Section Modulus

단묘박

Single Anchor Mooring