mine workings的意思|示意

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mine workings相关短语

1、 detail survey for mine workings 矿井工程碎部测量

2、 ground plan of mine workings 矿山巷道底面图

3、 Mine workings firmness 井巷稳固性

4、 three-dimension mine workings 三维井巷

5、 water burst in mine workings 矿井突水

6、 Three-dimension underground mine workings 三维井巷

7、 old shallow mine workings 废弃的浅埋矿井