;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、宽重新确定;溶区间
布置,以及打眼巷、切割槽改进等。
定,再定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、宽重新确定;溶区间布置,以及打眼巷、切割槽改进等。
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