The high resistivity layer shall not be infinitely great or close to surface, otherwise the layer will prevent the current entering the anomaly body and no anomaly will be produced.
而当高阻屏蔽层在平面上趋于无限大而且埋深较大时，这时因进入异常体的电流很小，甚至趋于零，所以地面上观测不到异常体产生的磁异常。
High formation water salinity reduces resistivity contrast between oil layer and water layer.
高矿化度的地层水，降低了油层与水层的电阻率对比度。
Shielding layer conductivity is made together with the semiconductive layer adopts metal strip or wire cross-sectional area and the resistivity is determined by the.
屏蔽层的导电率是由连同半导电层所采用的金属带或线的截面积和电阻率所决定的。
The phosphorus-diffused layer also serves as a back surface field to raise the voltage and a back contact with low resistivity.
磷扩散层还充当用于提升电压的后表面场以及具有低电阻率的后接触部。
With the increasing of the thickness of copper layer, the electric ability of the surface is also improved and the exterior resistivity of different surface is also more identical.
随着镀铜层厚度的增加，木材表面的导电性有明显的提高，同时不同切面各方向上的表面电阻率的值也趋于一致。
The analytic computational formula for grounding resistance of grounding rods in three-layer soil is derived based on the concept of equivalent soil resistivity.
基于等值土壤电阻率的概念，导出了三层土壤中垂直棒接地电阻解析计算公式。
With improved BP network, Adopting deep, short resistivity, and acoustic logging, the model to recognize oil layer and water flooded layer is established.
利用改进的BP算法，采用深、浅侧向电阻率、声波时差测井建立了油层、水淹层的识别模型。
The invention provides a resistivity switching metal oxide or nitride layer capable of reaching at least two stable resistivity states.
本发明提供一种可达到至少两个稳定的电阻率状态的电阻率切换金属氧化物或氮化物层。
There is no high conductivity layer between the two plate suture zones, on the other hand the crust is an integrated high resistivity body.
两缝合带之间没发现壳内高导层，地壳表现为相对完整的高阻体；
SP logging is one of logging methods which can effectively distinguish resistivity of mixed liquid in formation after oil layer being water flooding.
自然电位测井是油层水淹后能够有效识别地层混合液电阻率信息的测井方法。
Correction system for resistivity logging in cased hole has been established in paper, including on condition of non-uniformity casing, formation having shoulder, cement layer.
文中建立的套管井电阻率测井校正系统，包括套管非均匀性、地层上、下围岩和水泥环的校正。
The annealing at the proper temperature may decrease the resistivity of SOI substrate obviously and also improve the resistivity of epitaxial transitional layer partly.
SOI衬底顶层硅呈现高阻状态，合适温度的退火可以明显降低SOI衬底顶层硅电阻率，也可部分减少外延高阻过渡层厚度。
The recognition and evaluation of low resistivity oil layer is worldwide problem.
低阻油层的识别、评价与熟悉是世界性的困难。
When salty mud intrudes into the layer, the reduction of water layer is small, but the reduction of oil layer is great. This will form a low resistivity oil layer.
盐水泥浆侵入时，水层电阻率降低较小而油层电阻率大为降低，因此形成低阻油层。
For any n-layer vertical dike set with contrasts of electric resistivity, a set of equations of coefficients are derived for calculating the electricpotential in the point source field.
对于任意多层不同电阻率垂直岩层，导出了求解点源场电位的系数方程组。
The practicality of the calculation scheme is verified by taking electrical resistivity prospecting for two-layer foundation as an example.
以二层地层的电阻率勘探为例，初步验证了计算方案的实用性。
This method determines the formation water electrical resistivity without using the layer of water, besides, the result...
该方法不用水层而直接求出地层水电阻率，并且计算结果与实际测试符合较好，具有准确、简便的特点。
In the west and central profile, the structure of the south Qiangtang depression is similar to the deep structure of the west uplift, featuring a double-layer intracrustal low-resistivity zone.
西部隆起区结构独特，浅中部与深部结构有别，存在一南倾低阻异常带。
Finally grounding resistance and soil resistivity are measured under the condition of two-layer horizontal soil, and the model is proved to be reasonable.
实验测量了两层水平分层土壤结构下的接地电阻和土壤电阻率，证实了土壤分层模型的有效性和可靠性。
Nowadays, the saturation evaluation of low-resistivity oil layer is a difficulty of logging evaluation, and is based on genesis analysis of low-resistivity reservoir.
低阻油层饱和度评价是当前测井评价难题，而低阻油层成因分析是饱和度评价的基础。
Nowadays, the saturation evaluation of low-resistivity oil layer is a difficulty of logging evaluation, and is based on genesis analysis of low-resistivity reservoir.
低阻油层饱和度评价是当前测井评价难题，而低阻油层成因分析是饱和度评价的基础。
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