key horizon是什么意思

网络释义

用法例句

Dynamic reliability calculation for random seimic response of soil layers;

土层随机地震反应的动力可靠度计算

According to the data of field investigation for tea garden soil in Meng Ding mountain,the soil chemical properties and nitrogen mineralizations were analyzed under different cultivation years and different soil layers,through determination of chemical properties,mineralization-culturing experimentation.

为探讨蒙顶山茶园土壤肥力和供氮能力,本研究以茶园土壤为对象,实地采样,通过土壤基本化学特性测定和矿化培养实验,分析蒙顶山茶园不同种植年限和不同土层土壤的基本化学特性变化及土壤氮素矿化特征,以期为拟定合理的施氮量和提高氮肥的利用率提供科学依据。

Water jet soil reaming technology and its influencing factors;

水射流土层扩孔技术及影响因素

Equation of soil bore enlarging with submerged water jet and experimental study;

淹没水射流土层扩孔方程

In this paper,according to the result of the seepage tests wihich have been camed out in laboratory and in the solar poned of production for Qinghai potash first phase and second phase, permeability and physical charcacter and their Influent factors of soil on solar ponds field are analyzed systematically; In the end, the seepage controlling means for solar.

本文从青海钾肥厂一、二期工程盐田场地的野外与室内渗透试验结果出发，较系统地分析了盐田场地土层渗透性、土层自身物理力学性质和外界条件对其渗漏性的影响与改变；最后提出了对青海钾肥二期工程拟建盐田应采取的防渗措施。

Different technology measures are selected according to different geological conditions including soft soil layer,sand layer and fracture zone.

对青岛当地锚杆施工工艺进行总结,分别针对软弱土层、砂层、破碎带等不同地质状况采用不同施工技术措施,取得了较好的效果。

A simplified formula for calculating effects of the vertical seismic motion on the shear strain increment on the surface of soil layers is obtained by averaging six different incident waves.

简化公式中包含了场地类别、竖向和水平峰值加速度比、输入水平加速度峰值和土层厚度等主要影响因素,便于工程应用。

In allusion to drilling well cofferdam grouting antiseepage in riverside pump house,authors discuss hydrofracture grouting theory in soil layer,its design method and construction steps.

针对江边泵房井筒围堰注浆防渗,探讨了土层劈裂注浆的原理、方法和施工要点。

Large scale soil survey and mapping based on the spatial variation of soil horizons.;

基于土层空间变异性的大比例尺土壤调查制图研究

Model foundation is built in model shafts of laboratory test tank and WJP is drived in different soil horizons temperature.

在室内试验模型槽内构筑模型地基,在不同的土层温度下打设湿喷桩。

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。

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.

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

Bentonite is an expandable three-layer clay mineral.

皂土是一种可膨胀的土层粘土矿物。

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 .

delamination of concrete cover

混凝土保护层层状剥落

Soil below the ground surface.

下层土地面下的土壤

the layer of soil between the topsoil and bedrock.

位于上层土和岩床之间的一层土壤。

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

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

The upper part of the soil.

表土土地、土壤表面的一层

a nine-storied terrace must be built upon its lowly base,

九层之台，起于累土；

sprayed on method of curing

喷敷层混凝土养护方法

concrete cover to reinforcement

钢筋的混凝土保护层

a bed of clay, limestone, sand, etc

一层黏土、 石灰石、 沙子等.

This topsoil tends to wash away.

表层土壤要冲掉了。

treatment of concrete surface defect

混凝土表层破坏处理

Heavy rains washed the topsoil away.

大雨把表层土冲蚀掉了