seam plan 中文意思是什麼
seam plan
解釋
礦層圖-
Selection and application of construction plan for crossing point of road and inclined shaft at same seam
同一煤層平巷與斜巷交叉點施工方案的選擇應用 -
Discussion on implementation plan for anjialing open pit mine passing through no seam area
安家嶺露天礦無煤區過渡實施方案探討
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