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The sand dunes analyses data have shown they mainly consist of well sorted, symmetry skewness and find sands, and the kurtosis peak is narrow or very narrow. There are abundant impacts of mechanic process on the surface of quartz grains. The traces of eolian process often superpose on the traces stamped by river and beach processes. The dish--shaped concavities and mechanic pits are the most common surface textures, but the barchan concavities and curved grain edges are indicated the marks by eolian environment. The heavy minerals assemblages of coastal dunes are dominated by relatively high specific gravity which have stable chemical properity suggesting the mordern high dynamic environments of coast area. The depositional structures of coastal dunes are typified by corss--bed sets composed of steep foreset laminates and gentle windward dipping sets. It also contains some shell fragments and strong worn foraminiferal tests that are impossibly found in inland desert. On the other hand, the sandy deposits of the continental shelf of East China Sea are with wide range of grains, and the depositional pattens are quite complicated.
海岸沙丘是晚全新世以来相对稳定的海平面背景下的海岸带风成堆积，其沉积特征是以细沙为主，分选好，搬运方式以跃移占绝对优势，偏度上近对称，峰态窄到很窄；石英颗粒表面机械作用形态丰富，风成作用形态叠加于河流和海滩过程形态之上，碟形坑和撞击麻点是最为常见的表面形态，而新月形坑和曲脊是其指示性的特征标志；沙丘沙重矿物以化学性质稳定、比重较大的种类为主，反映了海岸带目前的高能动力环境；海岸沙丘沙的沉积构造以高角度前积层和低角度顶积层组成的交错层理为典型特征，同时还含有少量内陆沙漠所没有的少量贝壳碎屑和强烈磨损的有孔虫壳体。
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The results showed that the upper section of the profile contains more coarse fractions and loessic fractions, with the presence of gravels, showing vertical changes in grain size. All of these suggested that the upper section is loessic material deposited by water.
研究结果表明：凤凰山剖面上部含有砾石，粗粒组分含量较高，且垂向变化均较大，分选性较差，但同时颗粒组成仍以风成沉积的两个主要粒级为主，为经流水作用改造的次生黄土。
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From now on, in china, air-float separation technology and water- float separation technology mainly are applied for the separation between metal and nonmetal basing on recycling Fragmentized waste PCBs, but there exists low efficiency and second pollution for the tow recycle methods.
目前国内处理废弃电路板主要采用破碎后利用密度差的气流风选和水选进行金属与非金属的分选，存在效率低和二次污染等问题。
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Wind selection process: grinding materials, the fan entered the chassis will be the wind began to blow powder, after grinding chamber placed in the top of the analyzer sorting, fine through coarse grinding of materials into another room re-grinding and fine compliant with the degree of airflow into the cyclone collector, collected through a powder discharge port shall be finished.
风选过程：物料研磨后，风机将风吹入主机壳内，吹起粉末，经置于研磨室上方的分析器进行分选，细度过粗的物料又落入研磨室重磨，细度合乎规格的随风流进入旋风收集器，收集后经出粉口排出，即为成品。
- 更多网络解释与风分选的相关的网络解释 [注：此内容来源于网络，仅供参考]
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air float conveyer：风力运输机
air flap ==> 风门片,气阀瓣,气门片 | air float conveyer ==> 风力运输机 | air floated ==> 风分选的