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砂金矿矿床
释义
砂金矿矿床
Encyclopedia
理学
[贵金属矿床]
释
gold placer deposit
砂金矿矿床
原生金矿床或含金的岩石,经风化作用剥离出的金系列矿物颗粒被流水搬运、富集而形成的矿床。是重要金矿床类型。
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lawn comber and verti-cutter
lawn decorated with flowers
lawn establishment
lawn irrigation system
lawn maintenance and management
lawn mower
lawnmower
lawn rollers
lawn spray machine
lawn with flowers
law of absorption
Law of According to the Level to Allocate Land(1391)
law of action and reaction
law of addition
law of addition of antecedents
law of agricultural regional differentiation
law of a new element
law of a new factor
law of anomalous numbers
law of archival value
law of area
law of areas
Law of Argentina No.22208
law of associativity
law of banditry
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