It includes the division of dissolving area, the redetermination of its length and width,downhill layout of dissolving area a nd improvement of drilling tunnel and cutting grooves.
包括溶区
划分,溶区长、
新确定;溶区间下山布置,以及打眼巷、切割槽改进等。
新决定,再决定It includes the division of dissolving area, the redetermination of its length and width,downhill layout of dissolving area a nd improvement of drilling tunnel and cutting grooves.
包括溶区划分,溶区长、新确定;溶区间下山布置,以及打眼巷、切割槽改进等。
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