电阻率

The induced polarization decay curve contains more information than the polarizability. It relates to the pore structure, permeability, formation water resistivity and shality.

激发极化衰减谱比极化率具有更为丰富的储层信息，与地层的孔隙结构、渗透率、地层水电阻率以及泥质含量密切相关。

The main point of the improvement is adding a circuit branch with an etalon resistance connected in series in it , for monitoring the shock-wave arrival time entering the sample, in the measuring electrical circuit .

Mitchell等的测量冲击压缩下绝缘材料电阻率的技术做了改进，其主要之点是，在测量电路中增加了一个记录冲击波进入试件的电支路，并在新支路中串接一个基准电阻。

The resistivity of concrete using fly ash with high content of iron oxide has lower resistivity.

在具体使用的氧化铁含量高的粉煤灰电阻具有较低的电阻率。

An improved technique, in comparison with that of the Mitchell, et al, on measuring the resistance of insulant under shock compression is proposed in this paper.

对A.C.Mitchell等的测量冲击压缩下绝缘材料电阻率的技术做了改进，其主要之点是，在测量电路中增加了一个记录冲击波进入试件的电支路，并在新支路中串接一个基准电阻。

It is defined as the electrical resistance through a one-centimeter cube of insulating material and is expressed in ohm-centimeters.

体电阻率定义为边长1厘米的立方体绝缘材料的电阻，并表示为欧姆-厘米。

With the increasing of NiFe_(2)O_(4) contents, the resistivity of composite samples Nd_(0.67)Sr_(0.33)MnO_(3)/niFe_(2)O_(4) is 1073K.

值得注意的是，在这一温区中，这种复合样品的磁电阻是负的，即给样品加磁场后，样品的电阻率反而增大，与纯Nd067sro33MnO3样品的磁电阻性能恰好相反，其机制有待进一步研究； 4。

Furthermore, it was found that, when the ferromagnetic phase fraction is above the percolative threshold, the metal-insulator transition temperature increases, the resistivity decreases, but no obvious changes appears in the magnetoresistance value with increasing the ferromagnetic phase fraction.

最后，我们研究了两相比例对金属—绝缘体转变温度和磁电阻效应的影响，发现在渗流阈值以上，增加铁磁相含量可以提高金属—绝缘体转变温度，降低系统的电阻率，但对磁电阻数值没有明显的影响。

The objective standards of the EST risk assessment include pipe buried depth, frequency of going on a tour of inspection, amount of cars or trains to get by, thickness of the pipe or tank, occupied rate of the earth's surface on the pipe, depth of the corrosion pit, working time, soil resistively, MAOP, soil I〓, accident frequency, current velocity of river water, cutting down rate of the riverbed, fallback rate of the river bank, distance of the upper reservoir, criminal rate, attaining goal rate, reliability level, GDP, population amount, combustibility N〓, toxicity N〓, long-term danger RQ and so on.

专家评分法的客观性指标有管道埋深，巡线频率，日车辆通过数量，管道和罐的厚度，管道上方地面被占用率，腐蚀坑深度，服务年限，土壤电阻率，最大操作压力，土壤塑性指标I〓，事故频率，河水流速，河床下切率，河岸后退率，上游水库的距离，犯罪率，达标率，可靠度，国民生产总值，人口数量，易燃性N〓，毒性N〓，长期危险性RQ等。

The results show that with the content of the synthetic compound increasing, the surface resistivity of PVC materials was decreased. When the content of the synthetic compound reached 4.5%, the surface resistivity of PVC materials was reduced below 3.0×108 ?.

结果表明：随合成长链季铵盐的添加量增大，PVC材料的表面电阻率降低，较小的添加量(4.5%)即可使材料的表面电阻率降低至3.0×108 Ω以下，达到了煤矿行业对高分子材料抗静电性能的要求。

The specific resistance of iron is not so small as that of copper.

铁的电阻率不如铜的电阻率那样小。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。