The lower atmosphere is referred to as the homosphere because it has a uniform mixture of gases. 低层大气由均质的混合气体组成，所以也叫均质层。
The results suggest that the mountain-based occultation technique is a potential new method for monitoring lower atmospheric environments. 实验结果和原理研究表明，山基掩星观测技术是一种潜在的低层大气环境监测新技术。
