通过对兰新铁路百里风区戈壁风沙流进行现场观测研究，提出风沙流密度的新概念，解决风沙流研究中如何利用现场定时观测研究风沙流动态变化特点的重大技术难题。
Through field survey of wind sand flow movement in the 100 km wind area along the Lan-Xin Railway, a new concept, the density of wind sand flow, is put forward.
地面观测点，特定时间内空气和火山灰范围的卫星图片可以用来建立一系列更好跟踪火山灰的模型。
Observations from ground, air and satellite of the ash's extent at specific times might be used to create a series of model runs that would track it better.
在这些志愿者面临两难抉择的时候，研究人员可以观测到他们根据道德信仰来做决定时脑中发生的一切。
Faced with such dilemmas in the minds of their subjects, the researchers were able to examine what went on inside each person's head as they made decisions based on moral beliefs.
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