radon gas

• 氡气

radon gas的用法和样例：

例句

1. Recent studies indicate that radon hazard is a widespread geological hazard.
   氡气灾害是一种广泛分布的地质灾害。
2. The content of radon gas and methane bacteria indicates obvious abnormity above the gas pool.
   气田上方氡气和甲烷菌的含量存在明显的异常。