In addition to other effects, a nuclear weapon detonated in or above the earth's atmosphere can create an electromagnetic pulse (EMP), a high-density electrical field.

除了其他影响，在地球大气层中或之上引爆的核武器会产生一种电磁脉冲(EMP)，这是一种高强度的电场。

youdao

The results show that the density distribution of ion and electron is similar to electric field distribution.

结果表明，在电离的初始阶段，电子、离子密度分布与场分布同步。

youdao

The field emission properties were studied, and the work function, actual emission area and density of emission spot were calculated.

并且研究了非晶碳薄膜的场发射特性，计算了薄膜的功函数、实际发射面积和发射点密度。

youdao

So, instead of having the periodic variation of water, or the periodic variation of air density here we're talking about an electric field.

不像水或者空气密度的,周期变化，我们这里,讨论的是电场。

麻省理工公开课 - 化学原理课程节选