alabaster 发表于 2025-3-25 06:10:53
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http://reply.papertrans.cn/63/6263/626238/626238_22.png的阐明 发表于 2025-3-25 15:14:59
Practical Examples for Mathematical Modeling,ion was the motion of a glacier. Such valleys tend to follow some shape across the valley, and often one speaks about U-shaped valleys. Other valleys, formed by rivers, for example, tend to be V-shaped. Some of the naive curve fittings described in the literature are generally inadequate, so improveMalcontent 发表于 2025-3-25 17:28:29
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http://reply.papertrans.cn/63/6263/626238/626238_29.pngisotope 发表于 2025-3-26 17:53:12
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