density of field

常见例句

双语例句

• This problem demonstrates why the energy density of gravitational field is negative.
  本题演示为何重力场的能量密度是负的。
• The emission current density of the field emitter is primary determined by the surface field strength of the cathode.
  在计算场致发射体阴极发射电流时，影响发射电流的主要因素是阴极表面的电场强度。
• Week 16 Energy of point charges system, energy of electric field in capacitor , energy and its density of electric field.
  第16周点电荷系的能量；带电电容器储存的能量；电场的能量和能量密度；应用举例。

原声例句

• 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
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