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黑钙土
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黑钙土
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农学
黑钙土
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Chernozem
黑钙土
温带半干润气候地区草原植被条件下形成的,表层具有深厚腐殖质层、下部具有钙积层或石灰反应的土壤。在中国土壤系统分类为均腐土纲,半干润均腐土亚纲;在美国土壤系统分类中,黑钙土属于软土纲的多种类型:冷冻性冷凉软土、黏化冷冻软土、钙化冷凉软土、黏化半干润软土、弱发育半干润软土、钙质半干润软土等。
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cementing design
cementing mineral material
cementing plug
cementite
cement kiln dust
cement manufacture
cement mortar
cement particleboard
cement pavement maintaining machinery
cement plug and side track
cement pneumoconiosis
cement production process control system
cement slurry
cement slurry consistency
cement slurry flash set
cement slurry setting time
cement-soil wall
cement solidification
cementum
cement without cement clinker
Cemetery at Banlashan
Cemetery at Changzhuang
Cemetery at Chengjiagou
Cemetery at Cuijiahe
Cemetery at Dabona
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