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cemented backfill
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cemented backfill
Encyclopedia
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矿山充填
释
cemented backfill
胶结充填
在充填料中加入胶凝材料,充入采场后能形成具有力学强度充填体的矿山充填方式。
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Songliao basin
Songliao black pig
Songliao Fenshuiling
Songliao River Water Conservancy Commission of the Ministry of Water Resources
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Songlin language
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song manuals
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