noun🔗Share甲醛 The simplest aldehyde, HCHO, a colourless gas that has many industrial applications; it dissolves in water to give formol (10%) and formalin."To preserve the biology specimens, the science teacher used a solution containing formaldehyde. "为了保存生物标本,那位科学老师使用了一种含有甲醛的溶液。compoundsubstancechemistrymaterialscienceindustryChat with AIVocabulary GamePractice Reading