虽然最近的研究显示，癌症死亡率中因种族差异导致的不同正在衰减，但与白种人相比，一些少数群体仍然要承担更大的风险。
While recent research has shown that racial disparity in cancer death rates is decreasing, minority groups continue to bear a greater cancer burden than whites.
科学家曾预测CHAMPs会有强烈的不同寻常的衰减现象，因为它们衰减速度比很多亚原子粒子慢很多。
They are expected to have an unusual decay signature, and a strong one, since they decay much more slowly than many subatomic particles.
这项技术通过双能X-射线成像，重叠的组织信号可以被隔离，并利用不同能量的X射线的改变衰减量化。
The technique makes use of dual energy X-ray imaging, where overlapping tissue signals can be isolated and quantified by exploiting the change in X-ray attenuation at different energies.
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