因而关于射线的能谱硬化和散射研究工作，成为人们广泛关注的课题。
So people have paid many attentions to the research of energy spectrum hardening and the photon scattering.
而其中射线的能谱硬化和散射问题，又是制约工业CT各项性能指标提高的重要瓶颈之一。
Moreover the question of the energy spectrum hardening and the photon scattering is one of important bottleneck to restrict the improvement of ict.
疾病谱范围从简单的脂肪积累到炎症到瘢痕形成到以肝功变差为特征的肝硬化。
The spectrum of disease ranges from simple fat build-up to inflammation to the scarring and poor liver function that characterize cirrhosis.
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