1.
These soils are well developed and contain a subsurface horizon in which clays have accumulated.
发育良好，土表下有一层粘土淀积土层。
2.
layer,(eg of coal,between layers of other materials,eg rock,clay)
（夹层中的） 层（如石层、黏土层之间的煤层）;矿层.
3.
A specific layer of soil or subsoil in a vertical cross section of land.
地层，岩层处于土地的垂直横截面中的某一具体土层或次土层
4.
Bentonite is an expandable three-layer clay mineral.
皂土是一种可膨胀的土层粘土矿物。
5.
The results showed that the REEs contents in the C horizon the soils were the highest,but Ce was relatively concentrated in A horizon.
结果表明 ,土壤剖面层的底土层含量最高 ,但表土层铈相对富集 .
6.
delamination of concrete cover
混凝土保护层层状剥落
7.
Soil below the ground surface.
下层土地面下的土壤
8.
the layer of soil between the topsoil and bedrock.
位于上层土和岩床之间的一层土壤。
9.
In ABC soil, the uppermost zone of soil, containing humus; topsoil.
淋溶层在ABC层土壤中最上面的一层，含有腐殖土；顶层土壤
10.
SOIL HYDROLOGIC EFFECT OF THE EARTH-CUMULIC SURFACE HORIZON AND THE ARGIC HORIZON OF LOU SOIL IN LOESS PLATEAU
黄土高原(土娄)覆盖层与黏化层的土壤水文效应
11.
The upper part of the soil.
表土土地、土壤表面的一层
12.
a nine-storied terrace must be built upon its lowly base,
九层之台，起于累土；
13.
sprayed on method of curing
喷敷层混凝土养护方法
14.
concrete cover to reinforcement
钢筋的混凝土保护层
15.
a bed of clay, limestone, sand, etc
一层黏土、 石灰石、 沙子等.
16.
This topsoil tends to wash away.
表层土壤要冲掉了。
17.
treatment of concrete surface defect
混凝土表层破坏处理
18.
Heavy rains washed the topsoil away.
大雨把表层土冲蚀掉了