Warning: file_put_contents(/www/wwwroot/ppbbu/62383.com/cache/440e2ef8f1e4f94558dbbe96a00af148.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/62383.com/index.php on line 55 side abutment pressure例句_side abutment pressure英汉例句_side abutment pressure双解例句_流逝汉英词典
Adopting the research methods of numerical simulation, the distributional regularities of the side abutment pressure in different retaining width of pillar are analysed; 分析了不同煤柱留宽时采场侧向支承压力分布规律；