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- W2384883439 abstract "The existence of mining car changes figure and size of cross section of coal mine laneway,so it influences transmission characteristics of electromagnetic wave.The paper measured the influence of mining car on transmission characteristics of electromagnetic wave in coal mine laneway on the site and analyzed measured data in details.The measuring result showed that transmission attenuation of electromagnetic wave has relation with the length of carriage and the transmission frequency,the existence of mining car makes increase of transmission attenuation of electromagnetic wave.In range of 50～(900 MHz,) the higher the frequency of electromagnetic wave is and the smaller the attenuation is,the more propitious they are to transmit electromagnetic wave." @default.
- W2384883439 created "2016-06-24" @default.
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- W2384883439 date "2009-01-01" @default.
- W2384883439 modified "2023-09-25" @default.
- W2384883439 title "Measurement of Influence of Mining Car on Transmission Characteristics of Electromagnetic Wave" @default.
- W2384883439 hasPublicationYear "2009" @default.
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