特殊用法field flyback1.场逆程frame flyback1.帧回扫, 帧逆程horizontal flyback1.水平回描(扫)image flyback1.帧回扫input flyback1.输入端回程line flyback1.行回扫, 行逆程output flyback1.输出端回程vertical flyback1.垂直回扫[逆程]