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1·Here's what a naturally-occuring noctilucent cloud looks like, for comparison

以下可以对比自然形成的夜光云看起来来是怎样的

2·Rare earth noctilucent fibers are a kind of new materials, provided with special function.

稀土夜光纤维是一种具有特殊功能的新型材料。

3·The clouds are also called noctilucent, or night-shining, clouds because they are usually seen at twilight.

这些云也被称为“noctilucent”，也就是“夜光云”，因为他们一般出现在黄昏时分。

4·The preparation technique and application of noctilucent powder and noctilucent glaze were introduced in this paper.

介绍了夜光粉和夜光釉的制作方法及其应用。

5·Although noctilucent clouds are thought to be composed of small ice-coated particles, much remains unknown about them.

尽管我们认为夜光云由裹着冰的小微粒组成，但仍有许多未知有待研究。

6·Recent evidence indicates that at least some noctilucent clouds result from freezing water exhaust from Space Shuttles.

最近有线索表明，至少部分夜光云是由航天飞机上排出的水蒸气结冰所导致的。

7·Captured by flickr user, breff 3. A rendering of the noctilucent clouds created from data obtained by Russel’s NASA project, AIM.

利用拉塞尔NASA项目获得的数据绘制的夜光云效果图。

8·THE comings and goings of noctilucent or night shining clouds in the extreme upper atmosphere may be linked to the sun's rotation.

高层大气中时隐时现的发光的云团可能跟太阳的自转有关。

9·The recent observations of noctilucent clouds at all kinds of latitudes provide an extra impetus to understand what is going on up there.

最近在各种纬度进行的夜光云观察，提供了了解天上发生着什么的特别动力。

10·To get the noctilucent clouds you need temperatures that are about 20 degrees Kelvin colder than what we see on average up there, Wickwar said.

要获得夜光云，你需要的气温要比我们在那里看到的平均温度冷约20度绝对温度。

夜光的

1·To get the noctilucent clouds you need temperatures that are about 20 degrees Kelvin colder than what we see on average up there, Wickwar said.

要获得夜光云，你需要的气温要比我们在那里看到的平均温度冷约20度绝对温度。

2·The recent observations of noctilucent clouds at all kinds of latitudes provide an extra impetus to understand what is going on up there.

最近在各种纬度进行的夜光云观察，提供了了解天上发生着什么的特别动力。

3·The clouds are also called noctilucent, or night-shining, clouds because they are usually seen at twilight.

这些云也被称为“noctilucent”，也就是“夜光云”，因为他们一般出现在黄昏时分。

4·Polar mesospheric clouds are also known as noctilucent or “night-shining” clouds—a property that is clearly visible in this astronaut photograph.

极地中层云也被称为夜光云层（noctilucent）（就是在夜晚还闪光的云）。 这一特点在这张太空照片上显露无疑。

5·Captured by flickr user, breff 3. A rendering of the noctilucent clouds created from data obtained by Russel’s NASA project, AIM.

利用拉塞尔NASA项目获得的数据绘制的夜光云效果图。