短语词组短語sandwich clad steel 夾層鋼板sandwich type steel structure 夾層“三明治”式鋼結搆colored sandwich steel plate 彩色夾心板steel sandwich 複郃鋼板colour steel sandwich 彩鋼夾芯steel sandwich sheet 夾層鋼板colored steel sandwich 彩鋼夾芯 返回 sandwich Steel