科学家发现，受尿素污染的海藻能生成一种致密毒素软骨藻酸。
Urea pollution can trigger ocean algae to produce a deadly toxin called domoic acid, scientists have discovered.
苯酚、苯基苯酚、尿素与甲醛的反应产物进一步与糖醇缩聚生成新型铸造用改性酚醛树脂粘结剂。
A new type of phenolic resin adhesive for casting was prepared by condensation polymerization of furfuryl alcohol and the reaction product between phenol, phenylphenol, urea and formaldehyde.
用尿素饱和水溶液，有机氯化物为活化剂，生成的尿素-正烷烃络合物成球状，易于过滤分离。
With water as urea solvent and an organic chlorine compound as activator, the adducts formed into small spheres which are easily filterable.
应用推荐