urea
英[juə'riə]美[juə'riə]
n. 尿素
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- 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。收藏 - "When urea is added to soils it is converted rapidly to ammonium carbonate by hydrolysis, a reaction which is activated by enzyme urease. "
尿素施人土壤后很快水解成碳酸铵。这是由尿素酶催化的一种化学反应。收藏 - "Until 1828 (see urea), scientists believed that organic compounds could be formed only by life processes (hence the name)."
直到1828年之前，科学家们相信有机化合物一如其名只能产生在生命形成的过程中。收藏 - "Besides, the patient showed an elevated Blood urea nitrogen which indicated impaired kidney function at the time of the examination."
此外,在化验时患者还有血尿素氮升高,说明肾功能亦较差收藏 - 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。收藏
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