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单词
medium wave propagation
释义
medium wave propagation
Encyclopedia
工学
电离层电波传播
释
medium wave propagation
中波传播
波长从1000米到100米或频率从300千赫到3兆赫的无线电波的传播。
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Reading Schedule for Stages in Chengs Family School
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reading service of museum
Readings from Shen Nong's Classic of the Materia Medica
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