Sand storm and dust devil in spring in northern parts were extremely frequent.

春季北方扬沙和沙尘暴天气异常频繁；

Finally, the dust content which is in the process of a dust devil is calculated.

最后还对春季一次沙(尘)暴过程的载尘量进行了估算。

As seen from a distance, the Sun Tunnels and a quickly approaching dust devil, in Utah's Great Salt Lake Desert.

从远处看，太阳快接近隧道和沙尘暴在犹他州的大盐湖沙漠。

Then introduces an experimental study on the application of topic map technology in knowledge navigation for a dust devil archive.

接着，以沙尘暴研究领域的知识导航为例进行了主题图在数字化知识组织中的试验性应用研究。

It'd trigger off a little dust devil, for example, that perturbs the atmosphere downstream in such a way that you get one of these waves.

它引发了一小场尘暴，例如，干扰了大气的向下对流，从而产生了这种波。