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Nacreous Cloud

珠母云

1、贝母云

贝母云（Nacreous cloud）：在较高的纬度地区，在距地面20-30公里的平流层内，有时可见到一种很高的云，叫“贝母云”。

2、珠母云

...nacreous clouds 珠母云nacreous cloud 珠母云nacreous luster 珍珠光泽 ...

地球科学

n.a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon

同义词：mother-of-pearl cloud

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