正
电
子
断
层
z
h
è
n
g
d
i
à
n
z
ǐ
d
u
à
n
c
é
n
g
Definitions
1. PET, positron emission tomography (medical imaging method)
Components
正电子
zhèng diàn zǐ
–
positron (antiparticle of the electron)
断层
duàn céng
–
fault (geology)