An electricfield pushes a flame away from a burner in a recent Harvard experiment.
在哈佛的一项近期实验中，一个电场把火焰从燃烧器上推开。
2
The essential condition for the decay of the vacuum is the presence of an intense electricfield.
真空衰变的基本条件是存在强电场。
3
In 1832, the year of Michael Faraday's discovery that a changing magnetic field produces an electricfield, a young French engineer patented a new and more efficient waterwheel.