abbr.radioactive 放射性的，放射引起的，random access discrete address 随机接入离散地址...

Rada的音标：...

Finally, the possibility for using doped semiconductor and nanometer material to achieve infrared and rada.最后介绍了用掺杂半导体材料和纳米材料实现红外与雷达复合隐身的可能性....