gob bleeder

用法例句

This article tells of internal emission of mining space in east mining section after enlarging Lanqiao mine region of Liancheng Mine under the condition of the limit of volume of toppling earth.

介绍福建省连城锰矿兰桥矿区扩大露采后,现有大禾底排土场的容量不能满足新增废石量的情况下,对东采场采空区内排方案进行的探讨。