adj忧郁的
发表于 2025-3-23 11:11:23
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裁决
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chuckle
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expunge
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含沙射影
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哑剧
发表于 2025-3-24 09:52:49
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不能根除
发表于 2025-3-24 13:17:14
https://doi.org/10.1007/978-94-011-2150-7Copolymer; Resol; nuclear magnetic resonance (NMR); polymer; spectroscopy
Harness
发表于 2025-3-24 18:32:34
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Herbivorous
发表于 2025-3-24 20:43:35
Statistical analysis of copolymer sequence distribution,an range from alternating through random to blocky. Techniques that are able to determine comonomer sequence distribution are therefore of special interest to the polymer chemist. It has already been revealed in chapter 1 that NMR spectroscopy is particularly sensitive to stereochemical sequence dis
Foolproof
发表于 2025-3-25 01:44:19
Solution-state NMR determination of polymer end-groups, substituents and minor structures,hese irregularities include end-groups, branch-points and unusual units. In most cases, these features arise during the polymerization and their numbers depend upon the precise conditions under which the polymer is made. It is important to have information about structural irregularities not only to