常见例句Radio sources were divided by Fanaroff &Riley (1974) into two classes, now known as Fanaroff and Riley Class I (FRI), and Class II (FRII). 来自电波喧噪活跃星系的电波发射是同步加速辐射，被臆测是非常平滑的、自然的宽频和高度偏振。 返回 Frii