Nurses were lack of the cognition to radiation ionization injury, protection of external exposure injury, more nurses with sharp puncture wounded.
护士对辐射电离危害、辐射外照射防护等的认知不足，有锐器刺伤经历的护士较多。
2
The invention improves puncture voltage characteristic of the semiconductor device, in addition, collision ionization in the semiconductor device can be avoided.