eternal 发表于 2025-3-21 19:31:38
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0172-4967 ied only with great difficulty, if at all, by electronic means. Also, whether the capillary columns recent ly advocated with great enthusiasm for LC will fulfi978-3-642-67066-4978-3-642-67064-0Series ISSN 0172-4967Criteria 发表于 2025-3-22 04:02:10
Heinz Engelhardte kHz range (see Figs. 13.38 and 13.39) and passive materials with correspondingly larger depths as “bass traps” e.g. in music studios or class rooms for frequencies down to far below 100 Hz, (see Everest, The master handbook of acoustics, 1994) or Sect. 10.3.使人入神 发表于 2025-3-22 04:41:11
Heinz Engelhardtlogical and Hydrological Services (NMHSs), Research Institutes and Universities (KNMI 2009). But what we need is institutionalization of science supported establishment and validation of such services (Stigter 2009).使隔离 发表于 2025-3-22 09:15:04
Heinz Engelhardtrest in using climate information and try to implement their own management practices. Farmers have built a strong knowledge base from practical experiences (Balasubramanian et al. 1998) gained over generations and this knowledge has to be valued for potential gain in farming. Stigter et al. (2005)Esophagus 发表于 2025-3-22 12:58:26
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http://reply.papertrans.cn/43/4265/426414/426414_7.pngminimal 发表于 2025-3-22 21:13:34
Heinz Engelhardtoolean algebras in modeling and simplifying switching or relay circuits. This application will be described in §1. It should be noted that the algebra of switching circuits is not described because of its primary importance today but rather for historical reasons since it represented one of the firsflutter 发表于 2025-3-23 02:19:14
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Heinz Engelhardt, pointing out the special low-frequency problem. The following Chaps. 4–9 present an up-to-date overview of different effects and designs of state-of-the-art as well as some novel marketable airborne sound absorbers, focusing on classifying and describing the physical damping mechanisms, which diff