那是被测量的，作为吸收热能的，宏观横截面，除以全部的，吸收的能量的乘积。
And that is measured as a macroscopic cross section of absorption thermal divided by the integral of all energies in terms of absorptions.
我们称为一个横截面,那是宏观横截面,那我们之间提过的，可能是吸收，捕获，裂变，散射。
We call that a cross section which is the microscopic cross section which as we mentioned before could be absorption, capture, fission, scatter.
吸收项也是相对直接的，宏观吸收横截面乘以流量。
The absorption term also is relatively straight forward, macroscopic absorption cross section times the flux.
结果表明：焊接接头横截面宏观结构特征表现为焊核区的“洋葱环”和热-机械影响区的塑性流线变形，洋葱环的环间距随着距焊缝中心距离的增大而减小；
The experiment result shows that the spacing of onion rings, which is the most prominent features of most friction stir welds, decreases with the distance of onion ring to centerline increasing .
结果表明：焊接接头横截面宏观结构特征表现为焊核区的“洋葱环”和热-机械影响区的塑性流线变形，洋葱环的环间距随着距焊缝中心距离的增大而减小；
The experiment result shows that the spacing of onion rings, which is the most prominent features of most friction stir welds, decreases with the distance of onion ring to centerline increasing .
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