The analysis indicates that the transporting force of sand-storm activity and matter in sand dust source area are the decisive factors of sand storm activity.
分析表明，沙尘暴活动的搬运动力和沙尘来源区物质所处状态是沙尘暴活动与否的决定因素。
The comparison between the analysis results of the loess samples and the dust aerosol samples shows that this experiment method is very good to do dust source and sand dust storm researches.
黄土样品的分析结果与粉尘气溶胶样品的离子分析结果对比表明，此方法对于探讨粉尘起源以及沙尘暴天气的研究具有重要意义。
The special topography, climate conditions and the underlying surface with the source of the abundant sand were the material base of forming sand and dust storm.
特殊地形、气候条件和富含沙尘源的下垫面是形成沙尘暴的物质基础；
The special topography, climate conditions and the underlying surface with the source of the abundant sand were the material base of forming sand and dust storm.
特殊地形、气候条件和富含沙尘源的下垫面是形成沙尘暴的物质基础；
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