Bray-Dunes 布赖迪讷
Tottori Sand Dunes 鸟取砂丘
sand dunes 沙丘 ; 大沙丘 ; 白沙丘
The Woman in the Dunes 沙丘之女 ; 书名
Platinum Dunes 白金沙丘 ; 白金沙堆 ; 白金沙丘公司 ; 白金沙丘影业
White Dunes 白沙丘 ; 播放白沙丘
Pacific Dunes 太平洋沙丘 ; 太平洋沙丘球场 ; 平洋沙丘高尔夫球场 ; 安定洋沙丘
Bandon Dunes 班顿沙丘 ; 班顿沙丘球场 ; 邦顿沙丘 ; 班顿沙丘高尔夫球场
Crescent Dunes 新月沙丘 ; 形沙丘
For Maowusu sand YU Jing typical sections of highways on both sides of the law against sandstorms and sand on Highway Slope threat of harm,the different methods,physics of wind and sand,plant ecology,restoration ecology principle,using field observations,field Test and analysis of the indoor research,to adapt to Yu Jing highway slope protection and maintenance of ecological technology,in the light of local conditions and the suitable tree, harm security,the principles of favorableness,on the following main elements:(1) on the highway on both sides of sandstorms and their movements flow,flow and structure of sand dunes and the movement of research and analysis,and different forms of roadbed,height,slope,the wind direction and different angle different parameters of the road Optimization of draw:The highways cutting forms of harm than sand embankment of the sand level of serious;erosion of the embankment degree slope length with a proportional slope,and road and the northwest wind angle there was no significant relationship,cutting the sand buried and the extent of the Leeward slope is inversely proportional to the gradient,and road and wind angle is directly proportional to the northwest;The level of harm sand embankment slope parameters for the wind slope about 3m,the wind slope gradient around 15°(1:3.75).
该论文以防治榆靖高速公路风沙危害为目的,针对毛乌素沙地榆靖高速公路两侧典型路段风沙危害状况,应用风沙物理学、植物生态学、恢复生态学原理,采用野外观测、野外试验及室内分析的研究方法,本着因地制宜、适地适树、因害设防、化害为利的原则,论述公路两侧风沙移动规律以及风沙流运动对公路的影响,提出了适应于榆靖高速公路边坡生态防护及维护等一系列关键技术,研究成果对风沙区高速公路的后续管理和其它沙漠地区公路沙害防治具有一定的理论指导和实践意义。 主要研究内容如下:(1)通过对公路两侧风沙流运动因素及其关系、风沙流及其结构特征以及沙丘移动规律的研究分析,并结合不同路基形式、高度、坡度、不同风向及不同夹角的公路参数的优化分析,认为路堑形式的沙害程度较路堤形式的沙害程度严重;路堤的风蚀程度与上风侧坡长、坡度成正比,与公路和西北风的夹角无显著关系,路堑的沙埋程度与背风面坡度成反比,与公路和西北风夹角成正比;沙害程度最轻的路堤坡面参数为迎风面坡长3m左右,迎风面坡度15°(1:3.75)左右。
参考来源 - 沙漠地区公路边坡生态防护及其维护技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
N-COUNT A dune is a hill of sand near the ocean or in a desert. 沙丘
Large dunes make access to the beach difficult in places.
在有些地方大沙丘使得靠近海滩很难。
Large dunes make access to the beach difficult in places.
在有些地方大沙丘使得靠近海滩很难。
We walked to the furthermost point and then sat on the sand dunes.
我们走到了最远点，然后坐在沙丘上。
The sea may rise or the land may fall; either way the sand dunes will be gone in a short time.
海平面可能会升高，或者陆地可能会下降；不论发生哪种情况，沙丘都将很快消失。
A major reason is that the dunes bury any plants in their way as they move across the desert.
VOA: special.2010.01.04
From the visitor center, you can drive about thirteen kilometers into the center of the dunes.
VOA: special.2010.01.04
The bright white sand dunes are always changing,always moving, like waves on the ocean.
VOA: special.2010.01.04
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