false bottom是什么意思

用法例句

Application of Artificial Concrete-bottom and Concrete-lane in the Thin Vein of Gold Mine;

人工假底假巷在中薄脉金矿中的应用

Technologies of pillar recovery used in mining operation in Hongtoushan Copper Mine are reviewed,especially in the technology,manual false bottom,is introduced detailedly and the feasibility of the technology application in the mine is demonstrated in combination of real examples.

红透山铜矿在生产实践中采用的多种方法回收矿柱,取得了较好的社会效益和经济效益,详细介绍了"人工假底"的矿柱回收工艺,通过实例证明了该工艺在矿山应用的可行性。