库德拉检测了城市污水处理工厂的样本，并没有发现高难度的尿素。 但是曽有化粪池泄露污染切萨皮克湾和墨西哥湾。
Sewage-treatment plants tested as part of Kudela's study did not discharge much urea, but leaky septic tanks have been known to dump urea into the Chesapeake Bay and the Gulf of Mexico.
该工厂使用尿素作为还原剂，向分解炉内连续加入。
The plant added carbamide as reducer into calciner continuously.
通过采用向尿素合成塔加入工厂空气的降温方法，与传统方法相比大幅度缩短降温时间，为企业减少停工损失。
By applying cooling down method of adding factory air into the HP system, shortens urea converter cooling down time to a large scale and decreases shutdown losses for enterprise.
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