heavy magnesium subcarbonate

例句：

1. 1. This heavy magnesium subcarbonate is used as a fire retardant in the production of plastics.
   这种重镁碳酸盐被用作塑料生产过程中的阻燃剂。
2. 2. The heavy magnesium subcarbonate was found to have excellent heat resistance and chemical stability.
   研究发现，这种重镁碳酸盐具有极好的耐热性和化学稳定性。
3. 3. In addition, this heavy magnesium subcarbonate has been widely used in the field of environmental protection.
   此外，这种重镁碳酸盐在环境保护领域得到了广泛应用。