a stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons)
双语例句
The types of dosimeters worn by most radiation workers are not suitable for particulate radiation. 大部分辐射工人配戴的剂量仪并不适宜量度微粒辐射。
