关于precast的百科

• precast造句怎么写

• precastbeamandhollow-tilefloorNowadays,solidwallingisgenerallyconstructedofeitherbricks,precastconcreteblocksorin-situconcrete.Thepresentinventiondisclosesamultifunctionalbuildingprecastslabanditsproductionmethod.Thesepaintableprecastcolumnsareavaila...
• 2018-07-1027393