- A core drill bit consists of a steel tube with diamond segments brazed or laser welded on the drilling end.
核心钻头由一钢管或激光焊接金刚石钎环节就完钻。
- Objectives?To detect the change condition of stoma by laser welding and hand suture postoperatively.
目的探讨激光焊接法吻合小静脉时吻合口变化的情况。