The results show that the SSFs' bending strength gradually increases and the open porosity falls with increasing the slurry loading in precursor;

研究发现：随前驱体中浆料浸入量的增加，泡沫制品的抗弯强度逐渐提高，开孔率有所降低；

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Correlation coefficients between the thermal conductivity and bulk density, open porosity, permeability and raw material grade was obtained respectively.

另外，还计算了导热系数与体积密度、显气孔率、透气度和原料等级之间的相关系数。

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So that, it is necessary to adopt very sinterable UO2 powder and suitable pelleting and sintering conditions to minimize open porosity and small porosity.

因此，必须采用烧结性良好的UO_2粉末和合适的成型烧结条件以使开口孔隙度和细孔隙度降至最低。

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