In order to improve the contrast of reconstruction images for the materials which their elements absorbance index are very close, the technique of diffraction enhanced SR-CT is developed.

针对吸收系数相近的多组分材料，吸收成像无法分辨的情形，提出了衍射增强SR - CT方法。

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Main Outcome Measures Absorbance and apoptosis index.

主要指标吸光度，凋亡指数。

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Low shrinkage, low optical absorbance, low refractive index adhesive composition.

低收缩率，低光学吸收率，低折光指数粘合剂组合物。

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