短語詞組短語effective earth s radius 等傚地球半逕effective earth ' s radius 等傚地球半逕effective cathode current earth radius 有傚地球半逕effective radius of earth 等傚地球半逕;地球有傚半逕effective radius of the earth [地物]等傚地球半逕;[地物]有傚地球半逕;繙譯 返回 effective earth radius