短語詞組短語spray welding coating 噴焊層flame spray powder coating 粉末火焰噴涂spray -coating 噴涂法spray polyurea coating 噴涂聚脲涂料arc spray Al coating 電弧噴鋁thermal spray aluminum coating 熱噴涂鋁涂層Static spray moulding coating 靜電噴塑涂料arch spray al coating 電弧噴鋁spray welded coating 噴焊涂層 返回 spray coating