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中国古代深井开凿技术
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中国古代深井开凿技术
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工学
中国古代深井开凿技术
释
deep shaft sinking technique in ancient China
中国古代深井开凿技术
中国古代开凿深井,主要用于开采井盐卤水,称盐井;后来发展到开采天然气,称火井。
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topological disorder
topological division ring
topological divisor
topological divisor of zero
topological dual
topological duality
topological dynamical system
topological dynamics
topological edge state
topological elementary excitation
topological embedding
topological entanglement
topological entropy
topological equisingularity
topological equivalence
topological extension
topological fibering
topological field
topological field theory
topological flow
topological foliation
topological function
topological function theory
topological functor
topological generator
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