BS 46-1-1958 键和键槽及锥形销.键和键槽规范
BRITISH STANDARDCONFIRMEDOCTOBER 1985Specification forKeys and keywaysUDC 621.886.8BS 46-1:1958Incor
BS 46-1-1958 键和键槽及锥形销.键和键槽规范
BS 46-1-1958 键和键槽及锥形销.键和键槽规范BS 46-1-1958 键和键槽及锥形销.键和键槽规范BS 46-1-1958 键和键槽及锥形销.键和键槽规范