低收缩率，低光学吸收率，低折光指数粘合剂组合物。
Low shrinkage, low optical absorbance, low refractive index adhesive composition.
发现在它们的红移、光学光度以及平均光学- X射线谱指数的直方分布图上，X射线选择类星体统计上都分布在这些参数图的低端。
On the histograms of their redshift, optical luminosity and average optical X-ray spectral index, it is found that X-ray selected quasars are distributed at the low ends of plots of these parameters.
随着光子进入组织深度的增加，漫散射光学层析成像的深度敏感性呈现指数下降分布。
The sensitivity of diffuse optical tomography (DOT) imaging exponentially decreases with the increase of photon penetration depth, which leads to a poor depth resolution for DOT.
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