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(guó)，史密夫?qū)幪祗w物理學(xué)的觀測(cè)站同威爾遜山觀測(cè)站觀察查出，最后幾個(gè)月，大氣透明度持續(xù)減退。
