短語(yǔ)詞組短語(yǔ)cold ball heading 冷球頂鍛Cold -heading Dies 冷鐓模具cold -heading steel development 冷鐓鋼發(fā)展cold extrusion heading 冷擠鐓cold extrusion heading technology 冷擠鐓工藝 返回 cold heading