释义 |
para·formaldehyde \|parə+\ noun Etymology: International Scientific Vocabulary para- (I) + formaldehyde : a white solid that is a mixture of hydrated polymers of formaldehyde having the formula (HCHO)n.H2O or HO(CH2O)nH in which n varies from about 8 to 100, that is usually made by evaporation of an aqueous solution of formaldehyde, that readily regenerates formaldehyde especially on heating, and that is used as a source of formaldehyde : a mixture of polyoxymethylene glycols |