They rely on groundwater sources and the soil layer to survive.
它们依靠地下水源和土壤层生存。
For comparison, the case of homogeneous soil layer is considered also.
为了比较起见，文中考虑了均匀土层的情形。
The majority of mites in the soil layer eat small insects or their eggs.
土层中的绝大多数螨虫以小昆虫或它们的卵为食。
Soil adhesion may be reduced even if water cannot readily permeate the soil layer.
即使水不易进入污垢内层，也能降低污垢的吸附作用。
Were parasitized larvae overwinter in the frozen soil layer below, known as winter worm.
被寄生的幼虫在冻土层以下越冬，称为冬虫。
The skin resistance consists of frictions provided from every soil layer which the pile goes through.
设置在分层土中的桩，其桩侧总摩阻力由桩所穿过的各土层的摩阻力所构成。
Remanent magnetism of soil layer is taken as a reference frame for locating hydrocarbon seepage zone.
本文利用土壤剩余磁性作为确定烃类渗漏带的参考系。
The change law of release amount of CO2 from thin soil layer has the positive correlation with temperature.
而薄土层土壤CO_2释放量变化规律，与气温变化规律呈正相关，CO_2释放量不存在“滞后性”。
Variations of frozen soil layer have direct relation with the energy exchange between the ground and atmosphere.
冻土层的变化与地气交接面的能量交换过程有直接的联系。
In order to absorb water, the speed of root elongation in plants must surpass the speed of the humid soil layer moving down.
为了能够有效地从沙层中获得水分，植物的根系的伸长的速度必须大于湿沙层下降的速度。
Dynamic stiffness for lateral vibration of a viscoelastic floating pile in a nonlinear viscoelastic soil layer is investigated.
该文研究了非线性粘弹性土层中粘弹性悬浮桩侧向振动的动力刚度。
Under the action of wind, forced convection of air above ground and water evaporation of top soil layer will be greatly enhanced.
在风的作用下，地表上部空气的强制对流和表土层中的水分蒸发大大增强，对冻土层的热状况产生重要的影响。
The percentage of root biomass allocated to cluster roots increased in the soil layer supplemented with P in a split-root system.
在分根系统中，白羽扇豆的排根占根系干重的比例在局部供磷（羟基磷灰石）的土层中大量增加。
X woman's finger bone came from a soil layer that has yielded bracelets and other artifacts usually attributed to humans, Krause notes.
Krause提到，在发现X女人手指骨的土层中也挖掘出了手镯和其它手工品，这些东西通常是人类特有的。
It was shown that the present regressive solution was consistent with the solution of torsional vibration in saturated soil layer.
最后将分析结果进行了对比，结果表明：本文的退化解和饱和土扭转振动解是一致的。
The seasonal wetting-drying cycles result in a down-slope creeping of the shallow soil layer, leading to progressive slope failure.
季节性干湿循环使得边坡浅层土体逐渐发生向坡下蠕变，以致边坡发生渐进累积破坏。
With experimental study, the crush and rift size of every rock and soil layer can be defined with the fault separation of the cantaliver.
通过实验研究，每一层的岩土体的破碎和断裂尺寸可以用悬臂梁的断距来确定。
Under stratum condition of thick soil layer, we can study it as random medium and use probability integral method to estimate surface movement.
在厚松散层地层结构条件下，可将其视为随机介质，采用概率积分法预计地表移动变形。
The maximum value of the shear for the non homogeneous soil layer is always greater than that for the homogeneous soil layer in the whole depth.
对于剪应变，在整个土层深度内，非均质土层的最大期望值大于均质土层的最大期望值；
The numerical calculation show that load transfer and settlement of composite groundsill is affected by the thickness and modula of soil layer .
计算结果表明，在进行复合地基载荷试验时，载荷板下的垫层厚度及变形模量会对复合地基的荷载传递特性以及沉降产生影响。
A system consisting of soil layer, mulch layer and atmospheric boundary layer is developed and energy balance equation for each layer is derived.
建立了一个包括土壤层、塑膜覆盖物、植物冠层和大气边界层的系统，系统中的各层进行了能量平衡计算。
At the same time this paper discussed the relation between water and soil conservation and break-off discharge in the Yellow River, dried soil layer.
同时对黄河断流以及土壤干层与水土保持建设的关系进行了探讨。
TP, rapid available phosphorus, organic content and rapid available iron were gradually decreased in the top soil layer of wetland along the flow path.
总体而言，来水中的磷、有机质和速效铁以沿程逐渐降低的方式分布于湿地表层土壤中。
There are some main influence factors, which are the manners of improvement of foundation, soil layer structure, soft soil depth and embankment height.
影响软土路基侧向变形的主要因素有：地基处理型式、土层结构、软土厚度和路堤高度。
The protection of top soil layer has utter most importance in protection of grassland resources and ecosystem, and in prevention of sandy desertification.
保护地表土层对于保护草地资源和生态环境，以及沙漠化防治具有极端重要性。
The study reveals that the formation of dried soil layer is mainly caused by natural factors due to the reduction of precipitation and gravitational water.
研究表明，土壤干层的形成主要是自然原因造成的，是降水量少决定的重力水带分布深度小引起的。
The desiccation of deep soil layer on the Loess Plateau results from the gradual depletion of storing water during the process of vegetation rehabilitation.
黄土高原地区深层土壤干燥化是人工林草植被过度耗水导致土壤水分负平衡的结果。
The regularity and parameter of surface movement aroused by mining under thick soil layer and thin base rock have its obvious characteristic and regularity.
厚松散层薄基岩下开采引起的地表移动规律及地表移动参数，有其明显的自身特点和规律。
Deposing EM38 horizontally at different heights above the ground, the variation of EM readings has a relation to the salt contents in different depths of soil layer.
将EM 38水平放置在地表以上不同高度，仪器e M读数随高度的变化与不同深度土层的盐分含量分布有关。
How to consider the effects of soil layer construction and adjust the response spectra according as soil layer construction is an important subject in current site study.
如何考虑场地土层结构对设计反应谱的影响，并合理的规定设计反应谱是当前场地研究中的重要课题之一。
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