Radiation protection doors; sliding doors, single wing doors, dimensions
防辐射门；滑动门 单翼门 尺寸

1973-09-01

Radiation protection doors; revolving folding-doors, double wing doors, dimensions
防辐射门；旋转折叠门 双翼门 尺寸

1973-09-01

Radiation protection doors; revolving folding-doors, single wing doors, dimensions
防辐射门；旋转折叠门 单翼门 尺寸

1973-09-01