Coarse 发表于 2025-3-21 20:08:19

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哺乳动物 发表于 2025-3-21 22:31:11

Carbohydrates, formed of about 100 cellulose chains, are embedded in a matrix of hemicelluloses and lignin. Pores in the matrix are small and enable transfer of water, salts, and small organic molecules only. Although the hemicelluloses are at least partly water soluble, they cannot diffuse out of the cell wall d

流利圆滑 发表于 2025-3-22 01:25:12

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babble 发表于 2025-3-22 05:11:48

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亚麻制品 发表于 2025-3-22 12:13:43

Direct Characterization of Chemical Properties of Fibers,us separation of the components or component groups from each other. Although the details of the structure and composition generally can be obtained only to a limited extent, these direct methods possess definite advantages. For example, a minimum of preparation is required. Often samples can be ana

Comprise 发表于 2025-3-22 13:36:33

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neutrophils 发表于 2025-3-22 20:17:22

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栏杆 发表于 2025-3-22 23:12:40

Analysis of Inorganic Constituents, constituents of the wood material and their total concentrations (measured as ash) rarely exceed the 1% level. The inorganic ions are normally taken up by the living tree through the roots from the soil. The mineral elements play an important role in the growing process of the tree. The modes of up

intelligible 发表于 2025-3-23 02:41:57

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确保 发表于 2025-3-23 06:49:19

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查看完整版本: Titlebook: Analytical Methods in Wood Chemistry, Pulping, and Papermaking; Eero Sjöström,Raimo Alén Book 1999 Springer-Verlag Berlin Heidelberg 1999