彩色
发表于 2025-3-30 11:23:01
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GRAIN
发表于 2025-3-30 12:59:23
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食品室
发表于 2025-3-30 19:58:03
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五行打油诗
发表于 2025-3-30 23:45:03
Reinhard Well,Jürgen Augustin,Knut Meyerriod, strong wave-like wind disturbances propagating phases downward are observed in the mesosphere. The zonal wind amplitude is about 30 m s.. Observed vertical wavelengths and wave periods are 13 km and about 12 h, respectively. To explore dynamics of the wave disturbances, a model simulation is p
序曲
发表于 2025-3-31 03:38:36
Strained Iminium Salts in Synthesis,ABSTRACT. Cycloadditions of olefins to keteniminium salts derived from chiral amides provide an excellent method of synthesis of homochiral cyclobutanones. Applications to the asymmetric alkylation of olefins and the synthesis of optically active γ-lactones or prostanoids will be discussed.
enhance
发表于 2025-3-31 05:53:39
Introduction to OHS7ops. Hence,existing tools and applications can be hypermedia-enabled using the functionality provided by the OHS. Additionally,OHSs integrate with the backend layer,i.e.,file systems,databases,and the Internet