代表
发表于 2025-3-21 19:19:56
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切割
发表于 2025-3-21 23:25:40
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Connotation
发表于 2025-3-22 03:30:00
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清澈
发表于 2025-3-22 06:31:10
GC-MS Methods for Cyclic Nucleotides in Higher Plants and for Free High Unsaturated Fatty Acids in Vegetable substances can be categorized in a multitude of chemical compound classes. Within each class they vary considerably in concentration.
平静生活
发表于 2025-3-22 09:55:24
GC-MS of Plant Sterol Analysis,The structures of the sterol side chains and ring systems discussed in this chapter are presented in Figs. 1 and 2 respectively.
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发表于 2025-3-22 14:16:42
GC-MS Methods for Tobacco Constituents,Gas-chromatography mass spectrometry (GC-MS) has contributed to the advance of tobacco chemistry. Although the structure of unknown compounds cannot be determined by GC-MS alone, it is to great use to the identification of the tobacco constituents. Recently, mass spectra of tobacco isoprenoids have been reviewed by Enzell et al. (1984).
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发表于 2025-3-22 20:12:02
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谄媚于人
发表于 2025-3-22 22:41:19
https://doi.org/10.1007/978-1-4614-8423-3tions for the elucidation of the structural features of polysaccharides have been discussed in a number of reviews (Lindberg 1972; Lönngren and Svensson 1974; McNeil et al. 1982a). As the basic concepts of interpretation of mass spectra from carbohydrate derivatives have been adequately reviewed (Ko
CLAMP
发表于 2025-3-23 04:02:47
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灯泡
发表于 2025-3-23 07:08:47
Analysis of Animal Carcinogenicity Data(therefore) the physiological function of the membrane. The diverse lipid mixture present in each membrane seems to make possible a broader latitude for maintaining functional physical properties in the event of sudden environmental change. Phospholipids are the principal structural elements of most