A.模糊 B.不變 C.清晰 D.不一定
A.適量 B.過(guò)矯>-0.25D C.欠矯>-0.25D D.過(guò)矯-0.25D
A.適量 B.過(guò)矯>-0.25D C.欠矯>-0.25D D.欠矯-0.25D