thermal neutron log

例句：

1. 1. The thermal neutron log is used to measure the amount of radioactive material in the environment.
   热中子记录仪用于测量环境中放射性物质的量。
2. 2.The thermal neutron log helped us understand the distribution of radioactive materials in the area.
   热中子记录仪帮助我们了解了该地区放射性物质的分布情况。
3. 3.The thermal neutron log was a crucial tool for monitoring the radiation levels in the area.
   热中子记录仪是监测该地区辐射水平的关键工具。