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风景名胜资源
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由山水、动植物构成的自然景观与文物古迹、人文历史等构成的文化景观的综合,具有生态价值、文化价值、科学价值和审美价值,属国家所有的宝贵资源,构成风景环境的基本要素,风景名胜区产生环境效益、社会效益、经济效益的载体。又称风景资源、景观资源、风景旅游资源,简称景源。
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axiom of countability
axiom of countable choice
axiom of denumerability
axiom of dependent choice
axiom of determinacy
axiom of determinacy (AD)
axiom of domination
axiom of elementary sets
axiom of empty set
axiom of equality
axiom of existence
axiom of extensionality
axiom of foundation
axiom of free mobility
axiom of identity
axiom of inaccessibility
axiom of incidence
axiom of induction
axiom of inequality
axiom of infinity
axiom of linear completeness
axiom of mathematical induction
axiom of motion
axiom of neighborhoods
axiom of observable
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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