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汉语拼音：niào sù

1.一种重要的含氮化学肥料。分子式CO（NH2）2。白色晶体，能溶于水。植物从这种速效性肥料中吸收含氮养料后，不会在土壤中残留酸性物质，因而是优良的中性肥料。也是制造塑料、医药和炸药等的重要化工原料。加入反刍动物饲料中可代替饲料的蛋白质营养。

2.人和某些动物尿中的主要含氮物质。是蛋白质的代谢产物。

• Urea is commonly used as the source of nitrogen in foliage sprays.

  尿素作为氮素给源普遍地应用于叶面喷布.

• It must be broken down to urea, which consumes energy.

  它必须被分解成为尿素, 这时也要消耗能量.

• A kidney also takes urea and mineral salts out of the blood.

  肾还排出血液中的尿素和无机盐.

• Unfortunately, elemental analysis will not yield any information as to the extent of contamination by urea.

  不幸的是, 元素分析不能指出这个盐夹杂尿素的程度.

• But 120 tons of urea is really a small one.

  但120吨尿素确实是个小数目.

• Decanediamide was synthesized using sebacic acid and urea as starting materials.

  以癸二酸和尿素为原料合成癸二酰胺.

• B: check kidney blood urea nitrogen and serum creatinine.

  肾功能检查: 测定血尿素氮和肌酐.

• Urea nitrogen is what forms when protein breaks down.

  尿素氮是蛋白质分解的产物.

• The preparation technology and usage of urea peroxide are discussed.

  着重介绍过氧化尿素的制备、工艺研究及用途.

• Sweat consists of water with small amounts of urea and salts.

  汗液是由水和少量尿素和盐构成的.

• Urea is a neutral fertilizer, long - term use does not cause soil deterioration.

  尿素是一种中性肥料, 长期 使用也不会使土壤变坏.

• They say hydrogen peroxide or carbamide peroxide may also help.

  他们还认为过氧化氢和过氧尿素也有所帮助.

• Please quote for 100, 000 metric tons of urea FOB London.

  请你方报100, 000公吨尿素的FOB伦敦 价.

• Determining urea density according to the need in practical situation was reccommended.

  建议生产中根据需要确定尿素剂量.

• Urea naturally breaks down into ammonia in the water.

  尿素在水中会水解成氨.