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”。
Abstract: : the soft soil roadbed is mainly composed of clay and silty soil fine particle content of soft soil, the gap of the organic soil, peat soil and loose sand soil layer.
摘要：软土路基主要由粘土和粉土等细微颗粒含量多的松软土、空隙大的有机质土、泥炭土以及松散砂等土层构成。
Description : Raindrops have splashed clay particles and organic matter into the furrows, further than the sand particles.
降雨冲刷使粘土和有机物比沙粒更多的流入垄沟。
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