但如果这区域的形状很特殊，或者密度不均匀，也就是某些部分比较重，那就需要求加权平均值。
But if the region has a strange shape or if a density is not homogeneous, if parts of it are heavier then you will get whatever the weighted average will be.
本文提出的中子掺杂硅单晶旋转辐照模型，给出了热中子通量在硅断面上的分布．平均值和不均匀度。
The rotating irradiation model for ND silicon presented in this paper gives distribution, mean value and heterogeneity of the thermal flux on the cross section of silicon.
研究均匀磁场中电子的极化矢量、磁矩、能量和顺磁磁化率的统计平均值，以及在低温、强磁场极限和高温、弱磁场极限下的统计行为。
The statistical average value of electronic polarization vector, magnetic moment, energy and paramagnetic susceptibility, which are proceeded under constant magnetic field, is discussed.
锻坯硬度分布测试表明随着近等温锻造变形量的增大，均匀变形区域的硬度变化基本趋于均匀一致，且硬度平均值也在不断增高；
The hardness testing shows that hardness of uniform zone is tending to be uniformity and the average hardness is continuous to increase.
锻坯硬度分布测试表明随着近等温锻造变形量的增大，均匀变形区域的硬度变化基本趋于均匀一致，且硬度平均值也在不断增高；
The hardness testing shows that hardness of uniform zone is tending to be uniformity and the average hardness is continuous to increase.
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