“脲甲醛”的概念、定义、翻译、参考文献-科学参考

单词	脲甲醛
释义	脲甲醛 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	selectin Selecting Offices According to Province selecting points according syndromes selecting points according to symptoms selecting points along channel selecting points in distant location selecting points in nearby location selecting principles of illustrative examples selection selectional association selection algorithm selection and compilation selection bias selection breeding for forage plants selection breeding of fruit tree selection coefficient selection cutting selection differential selection effect selection factor selection function selection index selection index system selection intensity selection limit

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