• Aside from the sheer novelty of it, such observations are useful in gauging the apparent sky brightness and transparency during totality.

    暂且不说有多么地新奇,全食时这种观测精确计量天空亮度透明度也是很有用的。

    youdao

  • Aside from the sheer novelty of it, such observations are useful in gauging the apparent sky brightness and transparency during totality.

    暂且不说有多么地新奇,全食时这种观测精确计量天空亮度透明度也是很有用的。

    youdao

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