river sand

基本解释

The middle fan sand in Es3, the bioclastic beach bar at the bottom of Esl, the river sand in Ed formed very best reservoir.
沙三段的扇中砂体、沙一段底部的生物滩坝、东营组的河流砂体都是优越的储集层。
Mother would accumulate the river sand into a large heap drying in the open and then riddle with a screen before selling to the building boss.
母亲需要把捞上来的河沙堆积成一个巨大的沙丘，在空气中晾晒干后，用筛子再筛一次，然后才能卖给建筑商。
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According to dynamic test method of simulating actual spray system in the laboratory, this paper studies influence of wet agents on dust removal efficiency using Yellow river sand as test sample.
在实验室中运用模拟实际喷雾系统的动力实验法，以黄河沙为实验样品研究了润湿型抑尘剂对降尘效果的影响。

It lies between sand hills covered with pine trees and rich farmland near the Mississippi River.

The cassiterite makes up some fraction of the standard sand and river silt there.
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Sand bar: accretionary deposit of sand formed across a river mouth or bay by wave action and joined to the shore at both ends.
UNESCO: L O S S A R Y
But in 2008, it purchased a flood protection system that allows for a levee to be constructed — aluminum slats filled with sand — if the river rises.
NPR: Floodwaters Rising After Storms Deluge Heartland