The absorption term also is relatively straight forward, macroscopic absorption cross section times the flux.
吸收项也是相对直接的，宏观吸收横截面乘以流量。
You take the flux, multiply it by the cross section, average it, integrate it over the whole volume.
你拿流量乘以横截面，平均它，乘以它除以总容积。
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.
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。
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