A.0.12MPa B.0.76MPa C.0.48MP D.0.25MPa
A.0.12MPa B.0.76MPa C.0.48MPa D.0.25MPa
A.4個(gè)中間值的算術(shù)平均值 B.6個(gè)中間值的算術(shù)平均值 C.8個(gè)中間值的算術(shù)平均值 D.全部試樣檢測值的算術(shù)平均值