简述宁阳化肥厂采用中国五环化学工程公司编制的小尿素二版通用设计，并在此基础上进行小改小革的成功经验。
Adoption of second version of generalized design of small scale urea plant issued by China Wuhuan chemical engineering Corp. in Ninyang fertilizer plant and minor modification on it are introduced.
其合成方法主要有酯交换法、尿素法和二硫化碳法等。
Methods of synthesizing diphenyl carbonate included transesterification, urea and carbon disulfide.
目的：为评价血液透析一室和二室尿素动力学模型的差异。
OBJECTIVE To evaluate the difference of one pool and two pool modeling of urea kinetic in hemodialysis.
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