Sandstorms aren't the only source of sand in the air.
沙尘暴并不是空气中沙子的唯一来源。
Lichen fields-blooms of orange and gray over red sand and crusts of blackish gypsum-keep the soil stable and are a critical source of food for invertebrates.
地衣区是指红色沙石和黑色石膏地表之上的橙色及灰色植被区，它能稳固土壤，是无脊椎动物最关键的食物来源。
Sand, significant in the final colour of the concrete, came from a single source and was stored at the local producers to ensure maximum uniformity of colour.
沙子对混凝土的颜色有重要影响，采场单一、由本地的生产商负责以保证颜色最大的均匀性。
The vibration source of the falling sand machine is divided into mechanical, electromagnetic and pneumatic.
落砂机的振动源分为机械﹑电磁和气动。 。
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。
Nabkha dune is a kind of typical aeolian landform. The wind power, sand source and plant are the mainly influencing factors of the development of nabkha.
灌丛沙堆是一种重要的风积地貌类型，风力、沙源、植物是影响灌丛沙堆发育的主要因素。
With high magnification of microscopy, a lot of petroleum inclusions were found, which occur in the fissures of sand grains and authigenic minerals in the source rock.
用高倍荧光显微镜观察，在这些暗色泥岩的砂质碎屑矿物和自生矿物中，发现丰富的微石油包裹体群。
Using Pearl River source water as raw water, the contaminant removal effect of carbon and sand filter after the biological aerated filter(BAF)pretreatment process was investigated.
以珠江广州段源水为处理对象，考察了曝气生物滤池（BAF）预处理工艺后炭砂滤池的除污效果。
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。
By source analysis and researches on the sedimentary characteristics, the formation mechanism and types of the thick sand bodies in Chang 6 period in central lake basin of Ordos basin is studied.
通过对鄂尔多斯盆地延长组长6期湖盆中部地区物源分析、沉积相特征等研究，分析了厚层砂体的形成机理和砂体类型。
To the same size barrier, the thickness of deposited sand increased with wind velocity, and decreased with the distance to sand source.
同一规格的沙障，障内积沙厚度随着风速的增大而增大，随着距沙源距离的增加而减小。
The production and application problems of biological sand filter in treating micro-polluted water were studied in this paper, using the Fuyang River as source water.
本文以滏阳河水为水源，对生物砂滤处理微污染原水生产应用问题进行了理论研究。
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；
Sand body overall in parallel source direction is outspread, continuity, in vertical direction of source on the continuity, sand body in isolation.
砂体总体上在平行物源的方向上连续性较好，延伸较远，在垂直物源方向上连续性较差，砂体多呈孤立状；
The wind-drift sand land is both an available land resource and a source of pollutants of environmental pollution.
风沙化土地既是可利用的土地资源，又是环境污染的物质源地。
The Lower Holocene in the Xiaoshan-Yuhang area, Zhejiang, is composed of fine sand, silt and clay beds. They are rich in organic matter and constitute an important "gas source formation".
前言：浙江萧山—余杭地区全新统下部粉细砂、淤泥质粘土层有机质丰富，是重要的“生气层系”，所夹的贝壳层和砂层是主要的“储气层”。
With the rise and fall of datum plane, sedimentary centre of sand stone moved towards sediments source or basin.
并且随基准面上升和下降，砂岩沉积中心分别向物源和盆地方向迁移。
In Meizhou bay, the strong tidal stream transports its mud and sand from open sea, but is restricted to a certain extent, making the terrigenous clasts of the bay the main source of sediment.
湄州湾强劲的潮流导致外海泥沙输入，但受一定程度的限制，海湾周围的陆源碎屑成为沉积物质的主要来源。
The design of roof garden should consider water source, pollution of sand clay on air, wind power, and heat island effect.
屋顶花园的设计要考虑屋顶的水源问题，还要考虑砂土污染空气，又要考虑屋顶的风力和热岛效益等等所以要充分考虑。
Weathered sand has benefits of wide spread, plenty of source and low cost. However it has drawbacks of low strength and unstable gradation.
风化砂具有分布广泛、料源丰富、造价低廉的优点，同时又有强度低、级配不稳定等缺点。
Weathered sand has benefits of wide spread, plenty of source and low cost. However it has drawbacks of low strength and unstable gradation.
风化砂具有分布广泛、料源丰富、造价低廉的优点，同时又有强度低、级配不稳定等缺点。
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