At present, the serial disc chippers adopt wear-resisting backing board plate coated with chromium. The flying knife, bottom knife and flying knife bolt adopt the special steel and are made specially.
目前我公司系列盘式削片机刀盘采用耐磨垫板镀铬，飞刀、底刀、飞刀螺栓采用特种钢材特殊制作而成。
2
Objective: To observe the effect of postoperative syndrome of lumbar intervertebral disc protrusion by needle-knife therapy.
目的：观察用针刀疗法治疗腰椎间盘突出症术后综合征的疗效。
3
The bottom of the disc is made of knife-shaped gate with a cut off function of the medium. When gate is closed, oblique plane of gate valve encounters wedge block of gate to achieve sealing effect.