火车车轮 发表于 2025-3-25 04:56:24
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em is discussed in order to decide entailment of functional dependencies. Results are an axiomatisation of functional dependencies, and the corresponding inference relation. The approach also discuss general properties of data mining approaches in relational databases.occurrence 发表于 2025-3-25 12:41:25
Alexander Evans,Christopher San Marchi,Andreas Morintercede 发表于 2025-3-25 17:45:00
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http://image.papertrans.cn/m/image/631440.jpg参考书目 发表于 2025-3-26 00:34:38
Introduction,A composite material is a mixture of two or more separate phases, which have been intimately bonded together at a scale that is sufficiently fine that the result can be considered a material with properties of its own.Substance 发表于 2025-3-26 07:49:11
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A Review of Electric Propulsion for Air Vehicle Research, not only provide the thrust required by the aircraft, but also the flexibility of power transmission, which makes the design of the aircraft from a larger dimension. Therefore, electric propulsion aircraft is one of the main development directions of future aircraft. Based on the electric propulsiovisual-cortex 发表于 2025-3-26 17:17:42
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