Why could we observe eclipse instead of annular eclipse of the moon?
为什么能观察到日环食,而不能观察到月环食?
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Effect of the annular eclipse on the solar radiation and surface meteorological elements
太阳辐射和地面气象要素的日环食效应
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The next eclipse season begins in January 2009 with an annular solar eclipse.
下一个日月食季在2009年的一月,届时将出现日环食.
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