分部,当时投下往常一样,和核心棒后提取1.5小时。
The invention relates to a Cu-Al pipe welding joint, a preparation method and a special core rod thereof.本发明涉及一种铜铝管焊接接头、其制备方法及专用芯棒。
The present invention has low material cost, improved fiber performance, raised core rod making efficiency and capacity.本发明不仅降低了原材料成本,还可以改善光纤的性能以及提高光纤芯棒设备的制造效率与能力。