介电系数

Due to the charge process of dusty particles, the electric conductivity, dielectric coefficient and modulus decay of dusty plasma are larger than that of plasma.

结果表明：由于尘埃充电过程，尘埃等离子体电导率、介电常数以及衰减系数都比一般等离子体的大。

Also, we derive the formulation of electric conductivity, dielectric coefficient and modulus decay of dusty plasma by considering the collision process between charged particles and charge process of dusty particles.

利用玻尔兹曼动力学方程和尘埃等离子体的充电方程，考虑等离子体中带电粒子之间的碰撞和充电过程，推导出适合火箭喷焰环境的尘埃等离子体电导率、介电常数以及衰减系数。

The paper introduced determination on specific heat capacity and thermal conductivity of Hot Pressing ZnS target material by laser flash process;Moreover introduced measuring method for line expansion coefficients and bend strength of HP ZnS target material .

试验证明：热压 ZnS靶材有较好的热导率，在C D-R W的上下介电层应用上为记录层提供了很好的散热效果； ZnS靶材的线膨胀系数较低，有很好的尺寸稳定性； ZnS靶材有一定抗弯强度

The effect of tilting in oxygen octahedra on the dielectric properties is due to the interoctahedral angle increasing to 180℃ consuming the thermal energy, which results in the less effect on polarizability with increasing temperature.

氧八面体扭转能使介电常数温度系数朝正的方向变化的本质是，氧八面体间角吸收热能朝180℃变化，导致纯温度变化对极化率的影响变小。

To further study this problem, the optical axis is rotated by an arbitrary angle. A striking phenomenon is discovered that the Brewster angle is always equal to the rotation angle. This is because the waves in the direction perpendicular to the optical axis become evanescent since the permittivity is positive while the permeability is negative in this direction.

然后进一步的研究了主轴不垂直于界面的情况，发现主轴转动的角度恰好等于此时的Brewster角，这是因为此时垂直于主轴的方向上介电常数为正磁导率为负，只有倏逝波而没有可传播的波存在，因此反射系数为0。

Within the coupled resonant frequency region, the negative index of refraction can be achieved.

在负的磁导率和负的介电常数重叠的频率区域，能得到一个负的折射系数。

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。