back bolting是什么意思
中文翻译顶板锚杆支护
网络释义
1)back bolting,顶板锚杆支护2)roof bolting,顶板锚杆支护3)roof,顶板4)abacus,顶板5)bottom rider,顶板6)crown plate,顶板7)crown sheet,顶板8)head plate,顶板9)rider,顶板10)roof sheet,顶板用法例句
Evolvement rules of the roof control and crack field in working face;
顶板防治与回采工作面裂隙场演化规律
Stability Analysis on the Roofs of Mined-out Area with Different Spans in Jiagou Mine;
夹沟矿不同跨度采空区顶板的稳定性分析研究
Analysis on Critical Roof Thickness of Mined-out Area in Jiaguo Mine;
夹沟矿采空区顶板的临界安全厚度分析
