消磁

nà zhāng kǎ xiāo cí le

那张卡消磁了。

That card has been demagnetized.

tā men gěi nà sōu chuán xiāo cí

他们给那艘船消磁。

They degaussed the ship.

tā zài gěi xiǎn shì qì xiāo cí

他在给显示器消磁。

He is degaussing the monitor.