combustion retardant的用法和样例：
例句
- Zinc borate is the most commonly used flame retardant for plastics, rubber and other synthetic materials.
硼酸锌是塑料，橡胶及其它合成材料的优良阻燃剂。 - Flame retardancy of a high polymerization degree PVC, plasticizer and flame retardant elastomer is studied.
研究了高聚合度聚氯乙烯树脂与增塑剂及阻燃剂共混弹性体材料的阻燃性能。
