Purpose : To recommend a new stand draining method in ileal ureter .
目的： 探索回肠代输尿管术中新的支架引流方式。
The fundamental structure and design method of four rolls universal mill stand are put forward.
给出了四辊万能机架的基本构造及设计方法。
The fundamental structure and design method of four rolls universal mill stand are put forward.
给出了四辊万能机架的基本构造及设计方法。
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