non-magnetic cast iron

例句：

1. 1.This non-magnetic cast iron is very strong and durable.
   这种非磁性铸铁非常坚固耐用。
2. 2. The machine uses non-magnetic cast iron as its main material.
   这台机器主要使用非磁性铸铁作为材料。
3. 3. In order to improve the strength of the structure, we need to use non-magnetic cast iron instead ofsteel.
   为了提高结构的强度，我们需要使用非磁性铸铁而不是钢。