聚甲醛 jù jiǎ quán 🔊 polyformaldehyde (CH2O)n + Review this word Meanings jù jiǎ quán polyformaldehyde (CH2O)n Its characters 聚jùto assembleHSK 4甲jiǎfirst of the ten Heavenly Stems 十天干[shi2…HSK 5醛quánaldehyde