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跟踪观察研究
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跟踪观察研究
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管理学
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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Astronomical Society of Japan
Astronomical Society of Southern Africa
Astronomical Society of the Pacific
astronomical spectral analysis
astronomical spectrograph
astronomical spectrometry
astronomical spectrophotometer
astronomical spectrophotometry
astronomical spectroscope
astronomical spectroscopy
astronomical symbols
astronomical technique
astronomical telegram
Astronomical telescope
astronomical telescope
astronomical test
astronomical tests of general relativity
astronomical theodolite
astronomical tide
astronomical time
astronomical timekeeper
astronomical time scale
astronomical triangle
astronomical twilight
astronomical unit
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