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地-电离层波导电波传播
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地-电离层波导电波传播
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电离层电波传播
释
earth-ionosphere waveguide radio wave propagation
地-电离层波导电波传播
地表层与低电离层(白天为D层,夜间为E层下部)所构成的同心球壳空间,以类似于微波平行金属板波导的机理,引导甚低频(3~30千赫)和极低频(0.3~3千赫)电波进行远距离直至全球范围的传播。
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Expansions on Three Theories: On Poetry
expansion test
expansion theorem
expansion thermometer
expansion time-scale
expansion tong
expansion turbine
expansion type temperature measurement
expansion valve
expansion wave
expansion wave of reflection and intersection
expansion work
expansive
expansive agents for concrete
expansive cement
expansive classification
expansive concrete
expansive constant
expansive homeomorphism
expansive map
expansive mapping
expansiveness
expansive operator
expansive rock
expansive soil
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