vector 发表于 2025-3-23 13:30:30
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https://doi.org/10.1007/978-3-642-55839-9 Hz) is extensively used for producing, transmitting and utilizing electric energy in industry and in the home. High-frequency sinusoids (of kilohertz, megahertz and gigahertz) are used as carrier signals for communication purposes. Sinusoids are in abundance in nature, as, for example, in the movemPOLYP 发表于 2025-3-24 10:31:15
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http://reply.papertrans.cn/23/2266/226582/226582_18.pngexpeditious 发表于 2025-3-24 20:00:07
https://doi.org/10.1007/978-3-663-11285-3e elements. This analysis is based on general (or classical) techniques, and involves writing the differential equations for the network, and using them to obtain the differential equation in terms of one variable. Then the complete solution, including the natural and forced responses, has to be obtPresbycusis 发表于 2025-3-25 01:58:44
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