density of cover

例句：

1. 1. The new paint job has a density of cover that is almost invisible.
   新的油漆工作具有几乎无法察觉的覆盖物密度。
2. 2. The scientist used high-resolution imaging to measure the density of cover on the surface.
   科学家使用高分辨率成像来测量表面覆盖物的密度。
3. 3.The density of cover in the forest is an important factor in determining its ecological health.
   森林中覆盖物的密度是决定其生态健康的重要因素。