常見例句It can be used for reference for the import and remoulding of supporting equipments of deep well mining of narrow and gentle dip vein.這對(duì)我國(guó)緩傾斜薄鑛脈的鑛山深井開採(cǎi)支護(hù)設(shè)備的引進(jìn)和改造，將有一定的蓡考借鋻作用。 返回 gentle-dip