照度有2家的最小值低于国家标准，所有的均值及最大值均符合国家标准；
Shine on the degree contain low 2 minimum valueses in the nation standard, all be worth and the biggest value all matches the national standard;
照度有2家的最小值低于国家标准，所有的均值及最大值均符合国家标准；
Shine on the degree contain low 2 minimum valueses in the nation standard, all be worth and the biggest value all matches the national standard;
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