steel tie bar for masonry的意思|示意
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砌筑用钢拉杆
steel tie bar for masonry的网络常见释义
砌体拉结钢筋 砌体材料最低强度等级 minimum strength class of masonry 砌体拉结钢筋 steel tie bar for masonry 支承长度限值 limiting value for supporting length ..