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优选词,正式主题词

ObservationObservation  

定义

  • Research method that involves collecting data as they occur (for example, observing behaviors, events, development of condition or disease, etc.), without attempting to manipulate any of the independent variables.

其它语言

URI

http://rdf-vocabulary.ddialliance.org/cv/ModeOfCollection/4.0.3/c680d43

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