vt. 消磁

[电] 消极

[ verb ]
make nonmagnetic; take away the magnetic properties (of)
<verb.change> demagnetise demagnetize
demagnetize the iron shavingsthey degaussed the ship

degauss \de*gauss"\ (d[-e]*gous"), n.
1. To make a (steel) ship's hull nonmagnetic by applying an
opposing magnetic field.
[WordNet 1.5]

2. To remove irregular magnetization in (the electron gun of
a cathode-ray tube); -- used to improve picture quality,
especially in computer monitors.
[PJC]