1、Gravel is an unconsolidated mixture of rock fragments or pebbles.
砂礫是礫石巖石碎片或卵石的松散的混合物。

2、Unconsolidated sandstone reservoirs are all over international various oil region.
疏松砂巖油藏遍布于世界的各個(gè)油區(qū)。

3、Study on Support Technology of Unconsolidated Fragment Soft Rock Drift
松散破碎膨脹型軟巖巷道支護(hù)技術(shù)研究

4、Sand production is one of the major concerns in unconsolidated sandstone reservoir development.
出砂是疏松砂巖油藏開發(fā)面臨的主要難題之一。

5、An unconsolidated mixture of rock fragments or pebbles.
礫石巖石碎片或卵石的松散的混合物