crater density meaning in Chinese
月坑密度
Examples
- Based on crater densities within the basins , spa appears to be the oldest and orientale the youngest
根据盆地内的陨石坑密度估算， spa盆地似乎最古老，而东方海则最年轻。 - Older mare flows have been exposed to bombardment longer than younger flows , so they have higher crater densities
较古老的月海岩流受到撞击的时间比年轻岩流久，因此它们的陨石坑密度较高。 - Scientists already know the ages of the mare flows at the apollo sites from analyzing the radioisotopes in the rock samples , so they can estimate the ages of other flows by comparing their crater densities with those of the landing - site flows
科学家分析岩石样本中的放射性同位素，已经知道阿波罗登陆点的月海岩流年龄；因此将其他岩流的陨石坑密度与登陆点岩流的陨石坑密度相比，科学家便能估计其他岩流的年代。