陶瓷
发表于 2025-3-25 03:29:40
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蚊帐
发表于 2025-3-25 09:14:58
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Bombast
发表于 2025-3-25 11:53:33
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jet-lag
发表于 2025-3-25 18:26:25
T. De Martino,B. Falcidieno,F. Gianninion the fact that the direct product of groups is a group, the direct product of rings is a ring, etc. For the theory of first-order languages, the concept is less convenient since the direct product of systems having a certain first-order property may in general not possess that property. At the end
Legion
发表于 2025-3-25 21:49:29
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暗语
发表于 2025-3-26 01:39:53
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Asymptomatic
发表于 2025-3-26 07:09:26
sequence is defined if and only if all the lower obstructions are defined and vanish, in which case the vanishing of the .th obstruction is a necessary condition for definition of the (. + l)st obstruction.
招惹
发表于 2025-3-26 08:53:02
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Myosin
发表于 2025-3-26 14:29:23
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jungle
发表于 2025-3-26 18:33:28
Integration of Virtual Prototyping Applications with a Distributed Conferencing Systemn computers with all-digital data bases, interfaces, and output. The emphasis on concurrent engineering, total quality management, manufacturability, just-in-time manufacturing, and life-cycle costing makes prototyping a group collaborative effort. Similarly, the emphasis on virtual enterprises that