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经济性移民
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economic migration
经济性移民
人类以改善个体、家庭、族群的生产生活环境、社会经济条件及提高经济收入、生活质量为主要目的进行的,人口在不同城市、地区、国家间的流动和迁移;广义也包括投资、教育、商业、劳动、就业、婚姻等不同原因驱动的人口迁移活动。
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aqueous organic synthesis
aqueous oxidation of sulfur dioxide
aqueous-phase chemistry of formaldehyde
aqueous phase equilibrium of sulfur dioxide
aqueous phase reforming
aqueous reprocessing
aqueous reprocessing of spent fuel
aqueous solution
aqueous solution chemistry of plutonium
aqueous solution chemistry of uranium
aqueous solution electrolysis
aqueous solution growth
aqueous surfactant two phases
aqueous surfactant two phases (ASTP)
aqueous tissue
aqueous two phase
aqueous two-phase extraction
aqueous two-phase extraction; aqueous biphasic extraction
A Quickly Written Poetry to Thanks to Mr. Meng Jianyi for Sending New Tea
aquiclude
aquic moisture regime
aquicultural environment of shallow sea and littoral zone
aquiculture animal oxygen consumption rate
aquiculture animal physiological responses
aquiculture animal stress reaction
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