open truss steel joist的意思|示意
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开放式桁架钢托梁
open truss steel joist的网络常见释义
铁桁楼板搁肝 ... open web steel joist 空腹钢铁托梁 Trussed Steel Joist 桁式钢质栏栅 ; 桁钢搁栅 open truss steel joist 铁桁楼板搁肝 ...
open truss steel joist相关短语
1、 open truss steel joist WESTBANK 铁桁楼板搁肝