“urea formaldehyde”的概念、定义、翻译、参考文献-科学参考

单词	urea formaldehyde
释义	urea formaldehyde Encyclopedia 工学尿素释 urea formaldehyde脲甲醛由尿素和甲醛在一定条件下反应缩合的产物。白色无味粉末或颗粒状，难溶于水，不挥发，不吸湿，施入土壤后，在水解与微生物侵袭的双重作用下缓慢地释放其养分。它不是单一化合物，而是由链长与分子量所不同的甲基尿素缩合而成，其中包含从一甲基二脲至五甲基六脲等系列聚合物，其全氮（N）含量大约38%。
随便看	generalized random function generalized rational approximation generalized rational function generalized Rayleigh wave generalized real number generalized recursion theory generalized reduced gradient method generalized remainder method generalized residual equation generalized resolvent generalized resultant generalized ridge estimate generalized Riemann conjecture generalized Riemann hypothesis generalized Riemann-Roch theorem generalized rule of detachment generalized Schl⍥milch series generalized Schur algebra generalized self-consistent method generalized sequence generalized series generalized set generalized simplex method generalized Slater constraint qualification generalized Snell’s law

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