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
区的划分,区长、宽的重新
;区间的下山布置,以及打眼巷、切割槽的改
等。
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.
包括区的划分,区长、宽的重新;区间的下山布置,以及打眼巷、切割槽的改等。
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