roof key stratum的意思|示意
顶板关键层
roof key stratum的网络常见释义
顶板关键层 文章摘要信息 关键词 ： 浅埋煤层 顶板关键层 后屈曲 破断步距 极限下沉量 [gap=1078]Keywords : shallow seam；roof key stratum；post-buckling；breaking span；final subsidence
roof key stratum相关短语
1、 key roof stratum 顶板关键层
roof key stratum相关例句
The loci of plastic hinge line and the maximum load during first roof weighting are determined by using kinematical method, and the minimum span of roof key stratum is derived.
利用机动法确定了老顶岩板初次来压时载荷的上限值和塑铰线的位置，得到了顶板岩体关键层的最小破断跨距。