majestic
发表于 2025-3-25 06:26:30
On a class of edge-regular graphs,A regular graph is 4-regular if any two vertices at distance one resp. two have exactly λ resp. μ common neighbours. Some parameter relations are proved, and certain extremal cases of 4-regular graphs are classified. In particular, we obtain a characterization of double covers of complete graphs related to regular twographs.
反复拉紧
发表于 2025-3-25 09:30:32
Aquatic Carbon and Nutrient CyclingAquatic ecosystems differ radically from their terrestrial counterparts in physical environment and therefore in controls over ecosystem processes. This chapter describes the major differences in carbon and nutrient cycling between terrestrial and aquatic ecosystems.
Pudendal-Nerve
发表于 2025-3-25 14:52:45
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STAT
发表于 2025-3-25 17:41:21
Terrestrial Nutrient CyclingNutrient cycling involves nutrient inputs to, and outputs from, ecosystems and the internal transfers of nutrients within ecosystems. This chapter describes these nutrient dynamics.
噱头
发表于 2025-3-25 20:26:34
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规章
发表于 2025-3-26 01:29:13
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dearth
发表于 2025-3-26 05:15:07
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有权
发表于 2025-3-26 10:20:41
Karim FereidooniUrsachen der Benachteiligung von Kindern mit Migrationshintergrund im deutschen Schulwesen
有恶臭
发表于 2025-3-26 15:20:05
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Gene408
发表于 2025-3-26 17:41:08
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