noctilucent clouds的例句大全

Noctilucent clouds were first observed in 1885 by an amateur astronomer.

1885年,一位业余天文学爱好者最早观察到夜光云.

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much about noctilucent clouds has been discovered only over the past few years, while how they form and evolve remains a topic of active research.

在过去几年中，我们对夜光云已经取得了相当认识，但其形成和演进机制仍然是一个热点研究课题。

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noctilucent clouds are ragged extensions of a more widespread and more permanent layer which forms over the summer polar area at the mesopause.

夜光云是在夏季极地中圈顶之上形成的更广泛更持久的层的参差不齐的延伸。

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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。

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13 noctilucent clouds seemed to first appear after the 1883 eruption of krakatoa and are now a common sight.

13夜光云似乎首次出现是在1883年喀拉喀托火山（Krakatoa）喷发之后，而现在则已司空见惯。

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electric field measurements in noctilucent clouds

夜光云系的电场测量

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Pictured above earlier this month, a network of noctilucent clouds cast an eerie white glow after dusk, above the the city of Edmonton, in Alberta, Canada.

上面这张本月初拍摄的照片中，黄昏后的夜光云呈网状，在加拿大亚伯达的埃德蒙顿上空以怪异的白光与整座城市交相辉映。

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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。

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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。

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pictured above last week, a network of noctilucent clouds cast an eerie white glow after dusk, beyond a local field near potsdam, germany.

上图所示的就是上周在德国波茨坦市附近的田野上方，一大片网状的夜光云投射出一层怪异的白色辉光。

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noctilucent clouds appear about 80 kilometres above the earth in each hemisphere's summer.

这种夜光云出现在夏季离地球表面80公里高的大气中。

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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。

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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。

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12 highest of them all: 50 miles up, noctilucent, or "night shining, " clouds glow an eerie bluish white.

12最高的云：夜光云，也称“黑夜闪耀”云，存在于在离地50英里的高空，云朵焕发怪异的蓝白色光芒。

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