Radio sources were divided by Fanaroff &Riley (1974) into two classes, now known as Fanaroff and Riley Class I (FRI), and Class II (FRII).是什么意思_Radio sources were divided by Fanaroff &Riley (1974) into two classes, now known as Fanaroff and Riley Class I (FRI), and Class II (FRII).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句