urea

Urea pollution can trigger ocean algae to produce a deadly toxin called domoic acid, scientists have discovered.(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。)

Chaotropic agents, such as urea and guanidine are capable of bringing some hydrophobic compounds into aqueous solutions.(诸如尿素和胍的离液剂能够将一些疏水化合物带入水溶液中。)

The optimum nitrogen source is urea, next is peptone or yeast extract.(氮源中尿素最好，其次为蛋白胨和酵母膏；)

Remove asbestos or urea-formaldehyde insulation from buildings when required.(需要时从建筑物上移除石棉或脲醛绝缘物。)

Canada is rich in natural resources, for ammonia, urea, methanol and ethylene production.(加拿大有丰富的天然气资源，用于合成氨、尿素、甲醇和乙烯的生产。)

An amine or amino resin is the alkylated reaction product of urea or melamine and formaldehyde.(含胺基或氨基树脂是尿素或三聚氰胺和甲醛烷基化反应产品。)

"Marine animals release small amounts of urea, but the pollution problem is almost entirely human caused," says Kudela.(库德拉认为海洋动物排泄的尿素很少，污染问题几乎都是人类造成的。)

Blood urea nitrogen and creatinine were determined on 1, 3, 5 days after CDDP treatment.(CDDP处理后，分别在第1、3和5天采血，测定血清尿素氮和肌酐。)

Urea naturally breaks down into ammonia in the water.(尿素在水中会水解成氨。)

Serum creatinine and blood urea also may be measured to assess your overall kidney function.(血清肌酐和尿素水平也可以用来评估肾功能。)