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1·The open wire heating elements are usually made of nichrome wire.

裸线式电热元件通常用镍铬合金丝制成。

2·Durable nichrome wire wound around a ceramic core is embedded in ceramic material and then fired in a kiln on site.

耐用的镍铬合金线缠绕在陶瓷芯上，并镶嵌在陶瓷材料上后在烧窑中进行加热。

3·The open ribbon elements are also made of nichrome wire and are insulated in the same manner as the open wire elements.

裸带式元件也和裸线式元件一样以镍铬合金丝制成并以同样方式绝缘。