Redundant 发表于 2025-3-25 03:48:02
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978-1-84996-718-1Springer-Verlag London 2008HUMID 发表于 2025-3-25 17:53:29
Implications for Existing Theory,t shows that at least four frictionless contact points or four fixtures are required to immobilise planar objects. In particular, we show that three contact points are necessary and sufficient for immobilising a two-dimensional (2-D) triangular object but that four frictionless contacts or four fixtAncestor 发表于 2025-3-25 23:37:27
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Disease Prevention and Surveillance,m a macro perspective. The measures include the application of actual methods, steps, and plans that are used to achieve the desired objectives. The two parts are closely related. Only by taking the correct prevention strategies and under the guidance of reasonable measures, can we achieve the desir