1.
The Study on the Geologic Specific Property and the Engineering Measures of the Gravel Layers in Area of YaAn;
雅安砾石层工程地质特性及工程措施研究
2.
formation-to-gravel size ratio
地层砂与砾石粒度比
3.
gravel to sand size ratio
砾石-地层砂粒度比
4.
gravel-to-sand median diameter ratio
砾石-地层砂直径中值比
5.
multiple zone open hole gravel pack
多层裸眼井砾石充填
6.
GP shear-out safety joint
砾石充填剪切安全接头
7.
ESR Stratigraphically Chronological Study of the Gravel Layer in Yangluo Town,Wuhan City
武汉阳逻砾石层ESR地层年代学研究
8.
median pack-to-formaton grainsize ratio
充填砾石与地层砂粒度中值比
9.
packerless single selective gravelpacked completion
无封隔器的单层选择性砾石充填完井
10.
solid gravel seal
密实的砾石充填层间密封
11.
Reinforcing this layer by grunting mode is introduced.
介绍采用注浆方式来加固砂卵（砾）石层。
12.
A layer of coarse gravel is often placed around the drain tile.
常常在排水瓦管周围铺一层粗石砾。
13.
Construction Technology of Curtain Grouting of Deep Gravel Layer
深厚砂砾石层防渗帷幕灌浆施工技术
14.
gravelsand filled perforation tunnel
被砾石与地层砂混合物充填的射孔孔道
15.
Study on Simulation Grouting Experiment in Gravel & Mechanism of Permeating Grouting;
砂卵（砾）石层模拟注浆试验及渗透注浆机理研究
16.
Study and Test on Engineering Properties of Sand-gravel Cushion;
砂砾石碾压垫层的工程性能试验与研究
17.
Experimental Investigation on the Grouting and Analysis on Seepage Calculation in Sand Stratum and Gravel Bed;
砂砾石层灌浆试验研究及渗流计算分析
18.
Application of sandy gravel replacement for weak subgrade treatment;
沙砾石置换层在软弱地基处理中的应用