短語(yǔ)詞組短語(yǔ)horizontal retrace ratio [電子]水平廻掃時(shí)間比;行廻掃率vertical retrace ratio 垂直廻描率;垂直廻掃比line retrace ratio 行廻掃率horizontal phasing control retrace ratio 行廻描比率 返回 retrace ratio