Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/be6a0953bfe0f62cd4f283522b512290.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 overburden separated strata例句_overburden separated strata英汉例句_overburden separated strata双解例句_沉淀汉英词典
The mechanics model of the pressure balance arch in overburden is founded, that is necessary to calculate the sizes of separated strata rock layers. 建立覆巖內壓力平衡拱跡線的力學模型，計算離層巖板的尺寸；