
En 845 Specification For Ancillary Components For Masonry - Part 1: Ties, Straps, Hangers, Brackets And Support Angles
出版:British Standards Institution

专家解读视频
En 845 Specification For Ancillary Components For Masonry - Part 1: Ties, Straps, Hangers, Brackets And Support Angles
出版:British Standards Institution
专家解读视频