为什么我视力0.4可以看到黑板上的字,而我同学0.6却看不到?
为什么我视力0.4可以看到黑板上的字,而我同学0.6却看不到?
物理人气:881 ℃时间:2020-05-11 15:20:47
优质解答
可能是测视力时有差错
我来回答
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