1.
Crushing Behavior of Quartz Sand-gravel Particles and Its Fractal Features under Confined Compression;
侧限压缩下石英砂砾的颗粒破碎特性及其分形描述
2.
"Clay, silt, sand, and gravel. "
粘土，粉砂，砂土和砾石。
3.
formation-to-gravel size ratio
地层砂与砾石粒度比
4.
rathole gravel slurry
井底口袋内的砾石砂浆
5.
gravel to sand size ratio
砾石-地层砂粒度比
6.
gravel-to-sand median diameter ratio
砾石-地层砂直径中值比
7.
double pot gravel pack mixing unit
砾石充填双罐混砂装置
8.
Sandstone and conglomerate are the consolidated equivalent of sand and gravel.
砂岩和砾岩分别是砂和砾石固结的产物。
9.
Gravel is an unconsolidated mixture of rock fragments or pebbles.
砂砾是砾石岩石碎片或卵石的松散的混合物。
10.
Minute rough granules, as of sand or stone.
砂，砂砾，砂粒细小的粗颗粒，如砂和石头粒
11.
To apply a surface of rock fragments or pebbles to.
用砂砾铺覆以岩石碎片或卵石的表面
12.
Test Study and Numerical Simulation on Wetting Deformation of Gravel Sand;
砂砾石料浸水变形特性研究及砂砾石坝蓄水变形的数值模拟
13.
Then he dumped some gravel in and shook the jar, causing pieces of gravel to work themselves down into the space between the big rock.
他把一些砂砾倒进瓦罐，然后摇了摇，这些砂砾便渗进石块的缝隙中。
14.
median pack-to-formaton grainsize ratio
充填砾石与地层砂粒度中值比
15.
viscous carrier placed pack
用高粘携砂液作业的砾石充填
16.
Reinforcing this layer by grunting mode is introduced.
介绍采用注浆方式来加固砂卵（砾）石层。
17.
Research and Application of Horizontal Gravel Packing Sand Control Technology;
水平井砾石充填防砂技术研究及应用
18.
Study on the influential factors of the productivity prediction in Gravel-Pack perforate wells
筛管砾石充填防砂方式产能影响规律