PRE
发表于 2025-3-30 09:01:48
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高兴一回
发表于 2025-3-30 15:36:18
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不持续就爆
发表于 2025-3-30 17:56:26
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chemoprevention
发表于 2025-3-30 21:45:47
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Inclement
发表于 2025-3-31 03:30:52
Urethane Polymers and Reaction Injection Molding,Urethane is a polymer that has the characteristic linkage.and is formed by reaction of a dissocyanate and a polyol.. The polymerization can be schematically represented as.Some of the diisocyanates commonly used industrially are toluene diisocyanates.or diphenyl methane diisocyanate.and both of these are bifunctional monomers.