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Edward Kh. Gimadi,Aleksandr S. Shevyakov,Alexandr A. Shtepas primary emphasis is on aerodynamic research in aeronautics and astronautics, and in ground transportation and energy as well..978-3-030-25255-7978-3-030-25253-3Series ISSN 1612-2909 Series E-ISSN 1860-0824灯泡 发表于 2025-3-28 20:25:39
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From Firewood to Coal: Deforestation and the Development of the Silk Reeling Industry in Modern JapaCoal, therefore, did not become important until around the turn of the twentieth century, when steam boilers had become stronger and the gap in the relative prices of coal and firewood had been reduced.