JOT 发表于 2025-3-26 21:05:26
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,Data Collection Methodologies — Introduction,tions, however, it is wise to reflect on the purposes for which the energy data are required. We shall find that such data serve many different purposes, and different uses may require different data and different approaches to data collection.诗集 发表于 2025-3-27 14:49:56
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Science Press, Beijing and Martinus Nijhoff Publishers, Dordrecht 1986