采用U_3O_8添加剂可改善芯块微观结构，但同时使芯块密度下降，开口孔隙度增加进而导致吸湿加剧。
The use of U3O8 additive can improve the pellet microstructure, but result in decrease of pellet density and increase of open porosity, which contributes strongly to moisture.
科学家们还希望能将大片大片的反粒子云压缩为高密度的反粒子块，以便进行实际应用。
The scientists also want to compress large clouds of antiparticles into high-density clumps that can be tailored for practical applications.
对每一块的细微纹路进行着色能突显出神经细胞的主体部分(上面略带紫色的图)。图中的偏暗区域代表了大脑表明的高细胞密度区域。
Staining of a thin sliver of each block can highlight the main bodies of nerve cells (top, purplish image) with the darker areas indicating high cell density near the brain's surface.
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