adj.天體物理學(xué)的
In the United States, the Smithsonian Astrophysical Observatory and the Mount Wilson Observatory observed a decrease in atmospheric transparency that lasted for several months. 在美國,史密夫?qū)幪祗w物理學(xué)的觀測站同威爾遜山觀測站觀察查出,最后幾個月,大氣透明度持續(xù)減退。