뒷댐

Strong Back

뒷댐부재

Back Piece

뒷댐편

Chill Strip

뒷면 따내기

Back Chipping

뒷면 비드

Back Bead, Penetration Bead

뒷면 용접

Backing, Sealing Run or Backing run

뒷면굽힘시험

Rootbend Test

뒷면막기 용접

Backing Weld

뒷받침

Backing (Strip)

듀랄루민

Duralumin