反对 发表于 2025-3-28 15:27:03

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解决 发表于 2025-3-28 22:31:53

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DEMUR 发表于 2025-3-29 02:28:16

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Processes 发表于 2025-3-29 04:56:27

Critical Reading in Language Education considered have included polysiloxanes, polychloroprenes, polyurethanes, polyimides and epoxies. The polymeric materials have been exposed to oxidative and reducing atmospheres and radiative, thermal and mechanical stresses. Test conditions and the results of changes in physical and chemical proper

grandiose 发表于 2025-3-29 10:38:39

https://doi.org/10.1057/9780230514447t temperatures above ambient. Samples of polyurethane, polyethylene and polyimide, which represented highly crosslinked, lightly crosslinked and uncrosslinked foams respectively, were maintained under a range of compressive strains for periods ranging from three days to one month and their dimension

强化 发表于 2025-3-29 12:47:44

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摸索 发表于 2025-3-29 18:19:30

David T. Mitchell,Sharon L. Snydereriment, samples of rubber were aged in the presence of water (‘hydrolysed’) at 190°C for 48 hours both in a sealed inert gas atmosphere and also open to the air. Techniques used to probe the samples included mechanical testing, IRHD rubber hardness, thermogravimetry (TGA), Differential Scanning Cal

波动 发表于 2025-3-29 22:43:04

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1分开 发表于 2025-3-30 02:44:36

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neologism 发表于 2025-3-30 07:17:00

Critical Readings of Turkey’s Foreign Policyexplosives industry. The decomposition kinetics of NC have been investigated by ageing nitrocellulose-containing PBXs at elevated temperatures and monitoring the reduction in NC molecular weight using gel-permeation chromatography (GPC). The kinetics can be described by a first order, random chain s
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查看完整版本: Titlebook: Ageing Studies and Lifetime Extension of Materials; Leslie G. Mallinson Book 2001 Springer Science+Business Media New York 2001 Raman spec