单词	methylolurea
释义	methylolurea noun : either of two compounds formed as the first stage in making urea-formaldehyde resins: a : a crystalline compound H2NCONHCH2OH obtainable from one mole each of urea and formaldehyde and used especially for impregnating wood with which it forms hard resins called also monomethylolurea b : dimethylolurea Word History Etymology methylol + urea
随便看	opera tesselata opera vermiculata operabilities operability operable operably operagoer operagoers operagoing operagoings operance operancy operand operands operant operant conditioning operantly operants operas operatable operate operated operates operatic operatically

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