您要查找的是不是：
- However, 70 X 104 km2 of grassland became sources of sand dust because of soil wind erosion, which account for 30.4% of all sand dust sources, and 38% of all grassland in China. 但有近75万km~2的草地发生风力侵蚀并为沙尘暴提供物质来源，占总物质来源地的30.;4%25，占全国草地面积的38%25。
- Keywords faming-pastoral ecotone;revegetation;revegetation potentiality;sand dust sources;multi-layer fuzzy synthetic judgment; 农牧交错带;植被恢复;恢复潜力;沙尘源;模糊综合评判;
- sand dust sources 沙尘源
- Sand dust storm is a catastrophically climate mainly occurring in arid or semi-arid region. 摘要沙尘暴是主要发生于乾旱、半乾旱地区的一种危害极大的灾害性天气。
- The sand of Yanchi station during sand dust storm not only come from the background source but also the local supply. 形成盐池站多沙尘暴天气的沙源，除背景沙源外，本地沙源的补充也有重要作用。
- Meets the thunderstorm, the sand dust and so on the heavy weather is, should windward machine finish the preparation in these aspects? 遇到雷雨、沙尘等恶劣天气是，应对风机在那些方面作好准备？
- This paper aims to make a discussion and analysis of the sand dust aerosols, their origin and their propagation and sinking process. 从沙尘气溶胶的源地、输送及清除等几方面,讨论了沙尘天气发生的基本条件,即强风、大尺度环流形势和中尺度天气系统。
- Sublevel Mechanized caving method shows the characteristics of high out-put,more dust sources,high dust concentration and difficult to control. 煤矿综采放顶煤工作面开采强度大、产尘尘源多、粉尘浓度高，因而对尘毒的治理难度大。
- Recently, north part of our country the region frequently had the gale sand dust weather. What is called the sand dust weather?... 近日，我国北方地域频繁发生大风沙尘天气。什么叫沙尘天气呢？...
- According to the origin,sand dust weather in Qingdao region is classified as outlandish drifting type,inlandish forming type and outlandish drifting-inlandish strengthening type. 按照沙尘的源地和起因,将青岛地区的沙尘天气大体分为外地漂移型、本地生成型以及外地漂移在本地加强型。
- Today blowing sand dusts the town and silts its harbor. 如今，飞扬的沙尘弥漫了小镇，掩盖了港口。
- Analyzing the treatment of different dust sources and bringing forward treatment measure, accordingly the concentration of exhausted and position dust is decreased effectively during the open bauxite mine producing. 针对各产尘源的治理进行了分步分析,提出了治理措施,从而有效降低了铝土露天矿山生产过程中外排及岗位粉尘浓度。
- When the "turbid wind" with almost a saturated sand concentration changes to a refreshing breeze after getting rid of the sand dust around the protective net, it exhibits an even more powerful wind abrasion when blowing across the cliff region. 当含沙量几乎饱和的"浑浊之风"在防护网前后卸下沙尘变成清风，在吹过崖区时便显出更强的风蚀作用。
- When the "turbid wind" with almost a saturated sand concentration changes to a refreshing breeze after getting rid of the sand dust around the protective net,it exhibits an even more powerful wind abrasion when blowing across the cliff region. 当含沙量几乎饱和的“浑浊之风”在防护网前后卸下沙尘变成清风，在吹过崖区时便显出更强的风蚀作用。
- In the sand dust environment, the wear rate of polymer tapes are on the magnitude of 10-6-10-4 and 10-5-10-3 (mm3/N.m) respectively.The wear rate of PEN tape is 4-14 times higher than PI tape. 沙尘环境中PI、PEN薄带的磨损率大小分别处于10-6-10-4、10-5-10-3数量级范围，PEN薄带的平均磨损率是PI薄带的4-14倍。
- Based on the data of sunshine, cloud amount, haze, fog, sand dust, from 1954 to 2005, at Dezhou, Shandong Province, the climate tendency is calculated with the least square method. 摘要通过分析德州市1954-2005年日照、云量、霾、雾、沙尘等资料，用最小二乘法计算气候倾向率。
- The paper analyzes dust source and pollution actuality and brings forward prevention and cure countermeasure to different dust source. 分析了乌鲁木齐市扬尘的来源及污染现状,并针对不同扬尘源提出污染防治对策建议。
- The cement mill main dust source;s dust-concentration and net filtering wind velocity of the pulse spay-blow bag dust-precipitator suggestiong value. 水泥厂主要尘源点的含尘浓度和脉冲喷吹袋式除尘器的净过滤风速建议值。
- Moreover, the Angstrom exponent tends to be lower, indicating that the ratio of larger particles increased. So it is necessary to enhance the dust source harnessing. 而春季气溶胶光学厚度则在近2年有明显增加;源自沙尘天气;且Angstrom指数亦变小;表明大粒子比例增加;因此需要加强对沙尘源的治理.
- The arid and/or semiarid region in the middle and west parts of the Tibetan Plateau may be a potential dust source for the aeolian deposit of the northeastern Tibetan Plateau. 位于高原季风与东亚季风交汇区的湟水流域风尘堆积物可能有一部分来源于青藏高原中-西部干旱地区的风化细粒物质。
