“洞室”的英语？

江垭电站地下厂房洞室群共有大小洞室33个.Jiangya underground powerhouse has 33 chambers in different size.研究表明,地下厂房洞室群整体稳定.The results show that the tunnels are stable and safe.因此, 地下洞室的围岩稳定性问题就变得尤为突出.So, stability of rock mass around under...