The results indicate incidence laser intensity and plasma background density are important factors affecting convergent intensity.

计算结果表明：入射激光强度、入射激光波长及等离子体背景密度是影响会聚强度的重要因素。

youdao

The gravitational lens equations account for all the variables such as distance and density, and provide a better idea of when light left the background galaxy and how far it traveled.

引力透镜公式计算所有的变量，比如距离和密度，对光何时离开背景星系以及行走了多远的距离给出更好答案。

youdao

BACKGROUND: the overall evaluation on bone density and bone strength of the calcaneal can provide a new way for prevention and treatment of osteoporosis.

背景：对跟骨骨密度和骨强度进行全面评价，为骨质疏松症的预防和治疗提供新的思路。

youdao

And that geometrical prediction was confirmed directly by the Sloan survey, using the known distances of 500m light years to the density peak and 13 billion light years to the region where the microwave background originates as reference points to look for geometrical distortion, in the way that a more traditional land survey might use triangulation points.

ECONOMIST: Astronomy