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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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load identification
Load-In
loading
loading and handling
loading and unloading machinery
loading and unloading of truck transport
loading arm
loading belt conveyor drift
loading chamber
loading conditions
loading device
loading dock
loading dose
loading equipment
loading factor
loading matrix
loading mode for irradiation
loading rule
loading surface
loading test
loading valve
load lifting device
load limiter
load-line diagram
load mathematical model
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