nickel core

例句：

1. 1.The new car has a nickel core engine.
   这款新车搭载了镍芯发动机。
2. 2.The jewelry is made of nickel core.
   这个珠宝是用镍芯制成的。
3. 3.The nickel core is used in many electronic devices.
   镍芯被广泛用于许多电子设备中。