Last is the exosphere, which is the outermost layer of the atmosphere.
最后是散逸层，这是大气的最外层。
The exosphere is the furthest out and the least studied part of the upper atmosphere.
外逸层是最远的，也是研究最少的大气的上层部分。
The WFC3 images do not show any evidence for a temporary exosphere resulting from the impacts.
但是，WFC3的图像显示，没有因撞击而产生的任何临时外逸物质的迹象。
Above the troposphere is the stratosphere, followed by the ionosphere and capped by the exosphere.
在对流层上是平流层，接着是电离层，最上层是外逸层。
Above the troposphere is the stratosphere, followed by the ionosphere and capped by the exosphere.
在对流层上是平流层，接着是电离层，最。
Mercurian atmosphere is thin enough to be described as an exosphere, meaning the constituent atoms never collide.
汞自然的气氛更薄，足以被描述为散逸层，也就是说，没有碰撞原子组成。
The air density in the exosphere is so low that atoms and molecules can escape from it into interplanetary space.
外逸层中空气的密度非常小，以致原子和分子都能逃逸到星际空间。
The presence of the moon’s exosphere was confirmed by instruments on the Cassini probe which orbits Saturn and its moons.
围绕土星和它的卫星运行的卡西尼号探测器证实了卫星外逸层的存在。
Ions and high frequency electromagnetic radiation from the sun are responsible for dislodging the atoms in the exosphere.
离子和来自太阳的高频电磁辐射负责松脱的散逸层中的原子。
Above the stratosphere, blue layers mark the upper atmosphere (including the mesosphere, thermosphere, ionosphere, and exosphere) as it gradually fades into the blackness of outer space.
在大气层上，蓝色的部分表示上层大气(包括中间层、热层、电离层、外逸层)，它们渐渐消逝到外空间的黑暗中。
Above the stratosphere, blue layers mark the upper atmosphere (including the mesosphere, thermosphere, ionosphere, and exosphere) as it gradually fades into the blackness of outer space.
在大气层上，蓝色的部分表示上层大气(包括中间层、热层、电离层、外逸层)，它们渐渐消逝到外空间的黑暗中。
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