In the moving field of loose mine-rock under the ideal condition, the density field is uniform and constant.

在散体移动场中，对于理想散体，密度场为均匀场和定常场；

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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。

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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。

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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