请教关于X射线衍射方面的翻译，望大家帮忙。

有以下句子：A exhibits an X-ray powder diffraction pattern having characteristic peaks expressed in degrees 2θ (+/- 0.20 degree θ) at 7.6 (doublet), 8.6, and 10.5 degrees 2-θ.
其中，expressed in degrees 2θ (+/- 0.20 degree θ) at 7.6 (doublet), 8.6, and 10.5 degrees 2-θ. 这半句怎么翻译才比较通顺，望大家赐教，多谢。