查询词典 relative permittivity

The relationship between water tree growth speed and its influence factors, such as aging time, frequency of electrical field, and relative permittivity, was studied in this paper.

按照建立的水树枝老化试验装置和方法标准，本文对低密度聚乙烯和聚甲基丙烯酸甲酯两种固体片状材料进行了水树枝老化规律的试验研究，重点研究了低密度聚乙烯材料中水树枝引发和发展的影响因素和规律，包括盐溶液的浓度对低密度聚乙烯中水树枝形态的影响，老化时间、外施电压频率、盐溶液的电容率与水树枝生长速度的关系。

Methods: rouleaux and cleaned blood by PBS were observed by microscope, and measured this relative permittivity at low frequency by using bioimpedance technique.

利用光学显微镜观察了叠连状态和磷酸盐缓冲液洗后分离状态的红细胞，并利用生物阻抗技术测量了两种状态下的介电常数。

The interference produced on secondary cable is discussed in this paper.The effects of soil resistivity, relative permittivity, the density and area ofgrounding network are described.

论文对端部连接在地网上的二次电缆受到的干扰进行了分析，计算了土壤电阻率、相对介电常数、地网的疏密程度以及地网面积对电缆端部芯皮电位差的影响。

The results showed that relative permittivity of PLZST/PVDF composite with mass ratio of 3:1 could increase from 47.7 to 56.0 after polarized at 110℃ for half hour by electric field of 15kV/mm.

结果表明：质量比3：1的PLZST/PVDF复合材料在110℃，极化电压为15kV/mm的条件下极化0.5h，可使其相对介电常数从47.7增大到56.0。

Especially,the complex relative permittivity of the coated barium ferrite composite was much higher than that of the uncoated barium ferrite particles in the most frequency range.

六角晶系铁氧体具有较高的饱和磁化强度、特殊的六角片状结构、良好的化学稳定性和耐腐蚀性能，在微波吸收等领域具有广泛用途[2-3]。

On this basis,, Least-squares method is adopted to decompose the total current according to applied macro-field strength, and then the equivalent conductivity under AC and relative permittivity of nonlinear composite dielectric are obtained.

在此基础上，利用时域最小二乘法依据外加电场对总电流分解而获得非线性介质的交流等效电导率和相对介电常数。

According to the effect of relative permittivity εr on the pulse propagation velocity in lossy dielectric space and the effect on the turnround time of signal between the antenna and the buried objects, it is presented that lossy dielectric space can be transformed into free space and the simulation results abtained from free space can also be amended to lossy dielectric space.

对探地雷达的微波全息成像法进行了分析研究，根据有耗介质空间中的εr 对脉冲传播速度的影响，以及对脉冲在收发天线与目标之间的往返时间的影响指出：可将有耗介质空间转化到自由空间，再将自由空间中的计算结果修正到有耗介质空间。

Most of polar polymers possess comparatively high values of relative permittivity, which means that both bonding and non-bonding electrons in the molecular structure of these polymers can be easily displaced by external electromagnetic force.

大多数极性聚合物具有相当高数值的相对电容率，其意味着这些聚合物的分子结构中之结合与非结合电子两者，可以轻易以外部电磁力加以排出。

With increasing the ceramic volume fraction,d_(33) increased until it reaches a saturation value the and relative permittivity constant rose linear.

压电常数d_(33)随着纤维体积含量的增加迅速增大，最后趋于饱和，介电常数随着纤维体积含量的增加几乎呈线性增加。

The above-mentioned compounds display the relative permittivity of around 10~20, the quality factor of around 1000~30000 GHz and the temperature coefficient of resonant frequency of around -9~-100ppm /℃.The compounds are sintered in the temperature range of 700 ~ 1100oC.

以上化合物相对介电系在10~20之间，化合物Q×f约为1000 ~ 30000、温共振系为-9~-100ppm /℃烧结温均并高在700~1100oC之间。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。