短语词组短語cold -extrusion protruding mould 冷擠壓凸模cold closed upsetting -extrusion 冷閉式鐓擠rubber cold -feed extrusion 橡膠冷喂料擠出Cold -hot extrusion Forming Moulds 冷cold extrusion -heading technology 冷擠鐓工藝 返回 cold extrusion