demagnetize的音標是[?dem??ɡneta?z]，意思是“使去磁”。

速記技巧：可以通過詞根詞綴快速記憶單詞。在這個單詞中，前綴de-表示“去掉、取消”，詞根-magnetize表示“使磁化”，后綴-ize表示使…化。因此，可以聯想到這個單詞的含義是“使去磁”。

Demagnetize這個詞的詞源可以追溯到拉丁語和希臘語，意為“去磁”。它的主要變化形式是名詞形式demagnetism，表示“去磁現象”或“大眾影響”。

相關單詞：

1. Magnet - 磁鐵，這個詞源自拉丁語magnetis，意為“磁性的”。

2. Magnetism - 磁力，這個詞源自希臘語magnetikos，意為“磁性的”。

3. Antimagnet - 抗磁性物質，這個詞由ant-（反）和magnet（磁）組成，表示與磁性相反的性質。

4. Demagnetization - 去磁過程，這個詞由de-（否定）和demagnetize（去磁）組成。

5. Magneto - 磁性相關的詞綴，可以構成如電磁、磁化等詞匯。

去磁這個詞在英語中常常用于描述去除物體或現象的磁性屬性，這個詞的使用也反映了人們對磁性的理解和應用的歷史。在現代科學和工程中，人們通過各種方法和技術來研究、控制和利用磁性。

短語：

1. demagnetize the device

2. demagnetize the equipment

3. demagnetize the magnet

4. demagnetization process

5. demagnetize the magnets

6. demagnetize the magnetic material

7. demagnetize the magnetic field

例句：

1. The magnets in the refrigerator have been demagnetized after being exposed to strong magnetic fields for a long time.

冰箱里的磁鐵在長時間暴露在強磁場中后已經被消磁了。

2. The magnetic disk has been demagnetized due to excessive writing and erasing operations.

由于過度寫入和擦除操作，磁盤的磁性已經消磁了。

3. The magnets in the magnetic field have been demagnetized due to the decay of the magnetic field.

由于磁場衰減，磁場中的磁鐵已經消磁了。

4. The magnetic material has been demagnetized after being exposed to a strong magnetic field for a long time.

長時間暴露在強磁場中的磁性材料已經被消磁了。

5. The magnets in the electromagnet have been demagnetized due to insufficient current.

由于電流不足，電磁鐵中的磁鐵已經消磁了。

6. The magnetization process has been carried out to demagnetize the magnetic material.

已經進行了去磁過程以消磁磁性材料。

7. The magnetization of the magnetic material has been reversed by demagnetizing the magnetic field.

通過消磁磁場，磁性材料的磁化方向被反轉了。

英文小作文：

Demagnetization is an important process in many applications, such as magnetic recording and data storage devices. When a magnetic material is exposed to a strong magnetic field, it will be magnetized, which can be reversed by exposing it to a weaker magnetic field or by heating it up to a certain temperature. However, if the magnetic material is exposed to a strong magnetic field for a long time, it will be demagnetized, losing its magnetization completely. This process can be reversed by exposing it to a weaker magnetic field or by cooling it down to a lower temperature. Therefore, demagnetization is an essential process in many applications, and it is crucial to ensure that the magnetic material is properly demagnetized before it is used in any application.