polymethylene meaning in Chinese
【化学】聚甲撑，多亚甲基。
Examples
- Mdi testing methods for polymethylene polyphenyl polyisocyanate testing methods for polymeric mdi
聚甲烯聚苯聚异氰盐酸的测试方法 - Occupational exposure limit for polymethylene polyphenyl isocyanate in the air of workplace
车间空气中多次甲基多苯基多异氰酸酯职业接触限值