sand plain

There are abundant sand layers in the Dagu River plain, which are 3~ 8 m thick and like a string of beads in the plane distribution.

大沽河下游平原区沉积了丰富的砂层，平面上呈串珠状分布，厚38m，下伏白垩纪红砂岩不透水层。

It divided into point bar, the last channel, abandoned channel, crevasse splay, spill shore sand, flood plain six kinds of sedimentary microfacies.

划分为点坝、末期河道、废弃河道、决口扇、溢岸砂、泛滥平原6种沉积微相。

after armstrong landed at the moon sand plain, people's dream and imagination on luna was broken.

当阿姆斯壮登陆月球沙地平原时，人们对嫦娥的梦想与幻想就破灭了。

research on loading capacity of song-nen sand plain and rural urbanization

松嫩沙地承载力与乡村城市化研究

At last they were on dry sand, and then on grass-a huge plain of very fine short grass, almost level with the Silver Sea and spreading in every direction without so much as a molehill.

终于走到干燥的沙地上，接着又走到草地上&好大一片草原，长着细细短短的草，几乎同银海一样高，向四面八方铺展开去，连个鼹鼠窠都没有。

It has three reservoir sands: the barrier bar of Carboniferous Taiyuan Formation, delta-plain distributary channel sand of Permian Shanxi Formation and fluvial facies channel sand of Lower Shihezi Formation. The reservoir sands are low porous, low permeable and tight.

气田具有石炭系太原组障壁沙坝、二叠系山西组三角洲平原分流河道砂和下石盒子组河流相河道砂3套储集体，储集体为低孔、低渗、致密性储层；