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跟踪观察研究
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跟踪观察研究
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跟踪观察研究
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longitudinal study
跟踪观察研究
为了研究某一研究对象发展历程或生命周期中的状况,选定合适的观察样本,沿着事实动态发展的轨迹,进行观察,从而探寻其各个发展阶段的规律。又称纵向研究。
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field ray
field reconnaissance
field reflectivity
field rehearsal
field research
field reversal
field road project
Field rule
Fields
field safety management
Fields and Waves in Communication Electronics
field search
field seepage test
field sensible heat exchange
field setup definition
field shelter hospital system
field site of soil and water conservation monitoring
Fields Medal
Fields medal
field soil heat exchange
field soil moisture forecast
field soil water balance
field source
field source correction
field sowthistle
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