聚合物加工工程
polymer processing engineering
not-ground not operational ready
NORSNG
细长工件加工
turning on slender workpieces
木工联合机床
woodworking combined machine tool
榫钉接合木结构
doweled joint wooden construction
大型工件加工
extreme large and heavy workpiece
聚合物加工技术
polymer processing technology
pump pressure drop