source of emission

• 放射源

source of emission的用法和样例：

例句

1. According to the South China Morning Post reported Guigang City was a cement factory security permits, the factory will be two sources of stolen to sell as scrap metal.
   据南国早报报道贵港市一家水泥厂的保安竟监守自盗，将厂内两枚放射源偷出当作废铁卖掉。