But on April 18, the team saw several active dust devils leaving surprisingly bright tracks.
不过在4月18日，研究小组目睹了几场活跃的尘暴留下了令人惊讶的明亮痕迹。
A gritty wind can howl for hours, and "dust devils" (funnel-shaped whirlwinds) will appear without notice.
强风能哀号好几个小时，“尘卷”(漏斗形的旋风)会毫无征兆地出现。
When the dust devils came through, they destroyed the fragile clusters, revealing the finer sand grains below.
当尘暴经过时，气旋摧毁了脆弱的团块，曝露出下面的细小沙粒。
There could be special catalysts in the soil, for example, perhaps created by the static electricity whipped up by dust devils.
比如，有可能是泥土中存在一种特殊的催化剂，它可能是由小风暴席卷过后产生的静电引起的。
On Mars, dust devils can be up to 8 kilometers high.
在火星上，尘埃风暴能够达到8公里高。
For dust devils, the tangential velocity profile behaves like Rankine vortex, so it could be regarded as a kind of Rankine-like vortex.
尘卷风是一种类兰金涡，旋转速度和压力的分布具有兰金组合涡的特点；
Doppler Radar Observations of Dust Devils in Texas.
德克萨斯州沙尘暴的多普勒雷达观测。
Doppler Radar Observations of Dust Devils in Texas.
德克萨斯州沙尘暴的多普勒雷达观测。
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