尿素生成

添加造孔剂尿素生成的大孔形貌与造孔剂基本一致，孔隙率可达85%。

The appearance of macropore formed by urea volatilization was similar to urea , and the porosity could reach 85 % by adding pore-forming agent .

以氨气敏电极测定单位时间内脲酶分解尿素所生成的氨数量定量表示大豆脲酶活性高低，并对大豆脲酸的最适反应条件及氨气敏电极的测试条件进行了研究。

Urease in soybean is determined quantitatively by ammonia gas sensing electrode based on the ammonia produced from the urease hydrolysis reaction of urea . The effects of temperature , pH and urea concentration on characteristic of urease in soybean is studied .

以邻氨基苯酚和尿素为原料生成苯并恶唑酮，再用过氧化氢盐酸氯化制得6-氯苯并唑酮。

Benzoxazolone was prepared from o-aminophenol and urea and then was chloridized by hydrogen peroxide and hydrochloric acid to get6-chlorobenzoxazolone .

通过试验研究了排气温度和尿素喷射速率对尿素沉积物生成量的影响，优化了尿素喷射控制策略。

The influences of exhaust temperature and rate of urea injection on the urea sediment formation are studied through the experiments and the control strategies of urea injection are also optimized .