synthetic magnesite

例句：

1. 1.The synthetic magnesite is used in the production of steel.
   合成镁石用于钢铁生产。
2. 2. The company's main product is synthetic magnesite, which is widely used in construction.
   该公司的主要产品是合成镁石，广泛应用于建筑行业。
3. 3.The synthetic magnesite has a high melting point and can be used as a heat insulator.
   合成镁石具有高熔点，可以用作隔热材料。