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Educated Youth Worked in Countryside and Mountain Areas
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Educated Youth Worked in Countryside and Mountain Areas
Encyclopedia
历史学
重要事件
释
Educated Youth Worked in Countryside and Mountain Areas
知识青年上山下乡
20世纪50年代中期至80年代初,中国知识青年响应国家号召到农村和边疆地区落户参加劳动的运动。
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sigma-discrete family
sigma electron
sigma field
sigma-field
sigma field of events
sigma-field of events
sigma-field of sets
sigma field prior to tau
sigma-field prior to tau
sigma-field prior to τ
sigma-field strictly prior to τ
sigma-finite
sigma finite measure
sigma-finite measure
sigma-finite measure space
sigma formyl complex
sigma-formyl complex
sigma-function
sigma-group
Sigma hypernucleus
sigma hypernucleus
Sigma hyperon
sigma hyperon
sigma-ideal
Sigma index method
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