width of coal pillar的意思|示意
美 / /
英 / /
煤柱宽度
width of coal pillar的网络常见释义
煤柱宽度 ...煤柱宽度；钻孔应力计 [gap=768]keywords: lateral of abutment pressure; road driving along next goaf; width of coal pillar; borehole stress ...
width of coal pillar相关短语
1、 rational width of coal pillar 煤柱合理宽度