plane earth attenuation平地: level the land; rake the lan ...面: face电波: radio wave; electric wave; H ...衰减: attenuation; decay; damping; ...地平面电波衰减: plane-earth attenuation下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:平地面电波衰减，即可在微信中查询翻译
