1)  grave covering
砾石覆盖
1.
That is deviding vally into four big and eight small area according to Aibi Lake ecology chain effection and each area character in different area,raises the relative prohibition herding,grave covering,windbreak forest and etc,protection and recoverying measures.
将流域分成4大区8个小区,根据不同区域在艾比湖生态链中的作用和各区域的特点,提出相应的禁牧、砾石覆盖、防风林等保护和治理措施。
2)  gravel coverage
砾石覆盖度
1.
We report here the wind tunnel results of systematic tests of the aerodynamic roughness lengths of different gravel size and gravel coverage beds at various free\|stream wind velocities.
通过砾石床面的空气动力学粗糙度(Z0)的风洞实验研究,结果表明,砾石床面的空气动力学粗糙度(Z0)与砾石粒径、砾石覆盖度和自由风速有关,Bagnold的1/30定律和其它有关空气动力学粗糙度与粗糙元高度的固定比例对砾石床面都不适用。
3)  overburden layer
砂卵砾石覆盖层
4)  grit and gravel overburden layer
沙砾石覆盖层
5)  gravel
砾石
1.
Reserch on anti-cracking function of big-size gravel;
水泥稳定大粒径砾石的抗裂性能研究
2.
Looks into in the way of the performance on the gravel flexible primary level asphalt pavement route;
砾石柔性基层沥青路面路用性能调查
3.
Based on the water quality and climate of the oil contaminated lake in Daqing area,four simulated subsurface wetland systems were constructed in the field to study their removal effect of oil in lake water,including the gravel bed,the gravel-reed bed,the slag-reed bed and the slag bed.
针对大庆地区石油类化合物污染湖泊水质特点和气候条件,采用包含砾石床、砾石芦苇床、炉渣芦苇床和炉渣床单元的现场试验系统,考察启动期、投加微生物、投加缓释碳源、水温低于5℃和常规运行期等工况下各单元对石油类化合物的去除效果及其去除机理。
6)  gravel size
砾石尺寸
1.
Analysis and correction of DePriester gravel size model and its applications;
DePriester砾石尺寸设计方法的解析、改进及其应用
2.
According to the basic mechanism of tip screen out(TSO) frac-pack sand control and considering the effect of well stimulation and sand control,the design optimization method for gravel size was developed.
介绍了端部脱砂压裂充填防砂机理,考虑压裂增产比和挡砂效果,研究了压裂充填防砂砾石尺寸的选择思路和方法。
3.
Therefore,gravel size design is the key step of gravel-packing sand control optimization.
砾石尺寸的大小会影响防砂效果和油气井生产动态,砾石尺寸设计是砾石充填类防砂完井设计的关键步骤之一。
参考词条
补充资料：砾石填充液
分子式：
CAS号：

性质：砾石填充作业中，用来携带砾石或砂粒并将其运送到井下预定位置的液体。这种液体要求具有一定的黏度，不含有可能伤害地层及砾石层渗透率的物质，能较快降解，使砾石柱在井下能保持最佳的填充密度和过滤能力。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。