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mining and metallurgy in ancient China
释义
mining and metallurgy in ancient China
Encyclopedia
工学
中国古代矿冶业
释
mining and metallurgy in ancient China
中国古代矿冶业
中国古代金属矿产的开采和冶炼活动。主要是金、银、铜、铁、锡、铅、锌、汞八种金属的生产。有关古代矿冶业的文献记载,早期仅有产地而无产量。《新唐书·食货志》首次记载全国银、铜、铁、锡的年收入量。历代文献中的年收入量并不等于年产量,而往往是税收量、征集量、官营矿冶产量等。
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nutrient qi
nutrient recovery efficiency
nutrient reference values,NRV
nutrient reference value,NRV
nutrient requirements of aquatic animal
nutrient requirements of broodstock
nutrient requirements of larvae
nutrients
nutrients of aquatic products
nutrient solution
nutrientsolution culture system
nutrients retention factors
nutrient substance redistribution
nutrient supplement
nutrient supplying capacity
nutrient synergism
nutrient table
nutrient translocation and distribution
nutrient turnover rate
nutrient uptake
nutrient up take by symbiotic microb
nutrient use efficiency
nutrigeneties
nutrigenomics
nutrigenomics of aquatic organism
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