urea

noun

1. 尿素；脲
   a clear substance containing nitrogen that is found especially in urine

1. The N2 released from methanol synthesis can be used to synthesize ammonia for urea production.
   甲醇合成弛放气中含N2又可用于合成氨加工成尿素。
2. Ammonium tristyrylphenol polyoxyethylene ether sulfate was synthesized from tristyrylphenol polyoxyethylene ether and sulfamic acid using urea as catalyst.
   以三苯乙烯基苯酚聚氧乙烯醚和氨基磺酸为原料，合成了三苯乙烯基苯酚聚氧乙烯醚硫酸酯铵盐。
3. Latest information of urea market in USA, India and Viet Nam is provided for reference.
   通过对美国、印度和越南的尿素市场的简介，提供了进一步的最新市场参考信息。
4. Chemical reactions in urea-sulfuric acid system with different ratio of urea and sulfuric acid at various temperatures are studied.
   研究了硫酸尿素系统在不同配比和不同温度的化学反应。
5. The urea concentration to wash and purify protein was confirmed.
   确定了洗涤和溶解包涵体的最佳尿素浓度；
6. The method of synthesis guanidine nitrate from urea and ammonium nitrate in the presence of catalyst is discribed in this paper.
   以尿素和硝酸铵为原料，在催化剂的存在下合成硝酸胍。
7. Objective To evaluate the dry chemistry method for measuring serum urea and creatinine.
   目的：对干化学法测定血清尿素、肌酐的结果进行评价。
8. A 1% quota tariff rate will be charged on urea, compound fertilizer and diammonium hydrogen phosphate.
   对尿素、复合肥、磷酸氢二铵三种化肥的配额税率执行1%的税率。
9. Melamine-urea-formaldehyde-chlorocyclophosphazene microcapsule flame retardant was made by in-situ polymerization process using melamine, urea and formaldehyde as raw materials.
   以三聚氰胺、尿素和甲醛为原料，采用原位聚合法，制备了囊心为环状氯化磷腈、囊壁为三聚氰胺-尿素-甲醛树脂的微胶囊阻燃剂。
10. Amino and urea compounds are commonly used in applications demanding high levels of hygiene.
    在对卫生要求较高的环境中，氨基和尿素化合物一直得到广泛使用。
11. A clear thermosetting resin made from urea and formaldehyde and used in electrical fittings, adhesives, and finishes.
    一种清亮的热硬化性树脂，由尿素和甲醛制成，用于电器装备、粘合剂和末道漆中。
12. Study on Relation between Nitric Oxide Synthesis and Hepatic Urea Cycle on Condition of Aerobic Exercise;
    有氧运动条件下一氧化氮合成与肝脏尿素循环之间关系初探本文研究在相转移催化条件下萜烯低聚物与过醋酸的环氧化反应。
13. Synthesis of allantoin from glyoxylic acid and urea using ion exchange resins as catalyst was investigated.
    对三种阳离子交换树脂在乙醛酸与尿素缩合反应中的催化活性进行了研究。
14. An amino acid important in the formation of urea.
    一种对尿素形成有重要作用的氨基酸。
15. Common agents for the treatment of senile xerosis are moisturizing ointments or ointments containing steroids and urea.
    二甘醇（助溶剂和吸湿剂）治疗老年性干燥症的常用制剂有：保湿软膏、素软膏和尿素软膏。
16. Ammonia from protein digestion, the primary excretory product, is converted to urea to be excreted in urine.
    蛋白质消化所致的氨（主要的排泄物）被转化为尿素（urea）而从尿（urine）中排出。
17. Calculate the percentage by mass of nitrogen in urea and ammonium sulphate.
    试计算氮在尿素及硫酸氨的质量百分率。
18. The separation and purification of oleic acid from Camellia-oleifera Abel Oil by Solvent-separation and Urea adduction fractionation was studied.
    本文以油茶籽油为出发物料，对油酸溶剂法分离及尿素包合法纯化工艺进行了研究。
19. To understand the influence of icterus on urease coupling method for determining the serum urea nitrogen ( BUN).
    了解黄疸对尿素酶偶联法测定血清尿素氮（BUN）的影响。
20. Author has introduced the structure principle and the main function for the smart valve positioner of the urea plant;
    介绍了尿素装置智能型阀门定位器的结构原理和主要功能；
21. Meanwhile, urine calcium and hydroxyproline concentrations were examined as well. an amino acid important in the formation of urea.
    同时测定尿中的钙和羟脯氨酸的含量。一种对尿素形成有重要作用的氨基酸。
22. Studies on the characteristic of ammonia volatilization in soil surface applied urea, compound fertilizer, coated urea and coated compound fertilizer by the enclosure method.
    应用密闭法对尿素及其二次加工产品&复合肥料、包膜尿素和包膜复合肥料在施入土壤后的氨挥发特征进行了研究。
23. The synthesis of6-methyluracil from ethyl acetoacetate and urea with PEG-400 as phase transfer catalyst was studied.
    研究了聚乙二醇-400为相转移催化剂，乙酰乙酸乙酯和尿素合成6-甲基脲嘧啶的工艺条件。
24. 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。
25. The immediate effect of urea on the soil reaction is alkaline.
    尿素对土壤反应的直接效果表现为碱性反应。
26. 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。
27. Urea and ammonium nitrate solutions are most commonly used for N fertigation.
    尿素和硝酸铵溶液是最常用的灌溉施肥氮肥品种。
28. Refining of70% Conjugated linoleic acid ( CLA) was purificated with the method of urea including.
    采用尿素包合法对纯度在70%的共轭亚油酸（CLA）进行了提纯研究。
29. Controlling Ammonia Volatilization by Mixing Urea with Humic Acid, Fulvic Acid, Triple Superphosphate and Muriate of Potash
    尿素中添加腐植酸、黄腐酸、重过磷酸钙和氯化钾能抑制氨的挥发
30. Reaction kinetics of the first stage in the process of urea sulfuric acid decomposing phosphorus rock;
    对用脲硫酸溶液分解磷矿一步法制复混肥的工艺过程进行了系统研究。

noun

1. the chief solid component of mammalian urine

   Synonym:    carbamide