The sleeve has a dome-shaped shielding portion at one end, and a flange portion to be fixed to a modulator block at the other end.
该套有一个圆顶形屏蔽一端的部分，以及法兰一部分固定在另一端调制块。
2
Conclusions:( 1) Using the design method of blockshielding faciocervical portals at isocentre, the individual portals can be designed according to the malignant invading ranges.
结论：（ 1）等中心面颈联合野设野原则可根据鼻咽癌侵犯的范围做个体化放疗设计。
3
Besides of the light shielding function it can also nourish the skin and block the damages by color make-up.