Analyzed the structure characteristics of the tip and penholder and molding technology, introduced the injection mold structure characteristics.
分析了笔尖和笔杆的结构特点与成型工艺，介绍了该类零件的注射模结构特点。
2
Conclusions: Necrosis range of cluster cool tip radiofrequency ablation could be enlarged by being combined with ethanol injection and being prolonged ablation time.
结论：联合无水乙醇注射和适当延长射频消融时间可以增大射频消融的坏死范围。
3
Aiming at the new design of handle injection mould, the author expatiated the structural form of handle injection mould and analyzed the design of mould slanting tip core machine.