塔平面八角形，外观五层，夹有暗层四级，实为九层。
Tower level octagon, five stories of appearances, insert dark story of four grades, it is nine layers in fact.
选择神府矿区柠条塔煤中的镜煤、亮煤和暗煤进行了制水煤浆试验。
The paper had a coal water mixture test with vitrain coal, bright coal and dull coal from Ningtiaota coal in Shenfu mining area.
大金字塔的基座里总是暗如黄昏。
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