短語詞組短語spray welding coating 噴銲層flame spray powder coating 粉末火焰噴塗spray -coating 噴塗法spray polyurea coating 噴塗聚脲塗料arc spray Al coating 電弧噴鋁thermal spray aluminum coating 熱噴塗鋁塗層Static spray moulding coating 靜電噴塑塗料arch spray al coating 電弧噴鋁spray welded coating 噴銲塗層 返回 spray coating