单词：deep mining
deep mining的用法和样例：
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.这对我国缓倾斜薄矿脉的矿山深井开采支护设备的引进和改造，将有一定的参考借鉴作用。
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