基本解释聚甲醛同根派生 polyformaldehyde相关词英汉例句Our factory lies in Fushun, Liaoning Province.We focus on the production of Teflon and polyformaldehyde steel-backed compound materials.本厂主要生产聚四氟乙烯钢背复合材料和聚甲醛钢背复合材料。polyformaldehyde更多例句