单词stull
n.: 【矿】横梁；支柱网络: 横撑；顶梁；板架
【矿物】横梁,横撑;支柱
顶梁
复数：stulls
and stull my heart is saying we were right.
我心底的声音告诉我我们是对的
The Study and apply of the coal pillar width Parameter in along stull tunnel
沿空巷道煤柱宽度参数的研究与应用