Method: Retrospective analysis on the clinic datas of 86 cases with trephination and drainage treatment for acute epidural hematoma in our hospital were reviewed.
方法：对我院采用钻孔引流手术治疗急性硬膜外血肿86例的临床资料进行回顾性总结。
Experimental researches on the reuse of filter backwashing water are carried through by giving a thorough analysis to the drainage technology in Xinkaihe Waterworks.
通过对新开河水厂排水工艺的深入分析，进行了滤池反冲洗水回用的试验研究。
Some key technical problems have been amended, for example, leakage of hydraulic pressure bursa, control of drainage, analysis of apparatus system error, design of accessorial equipments, and so on.
解决了该仪器系统存在的几个关键技术问题，如液压囊漏水问题、排水控制问题、仪器系统误差分析、附属设备的设计等。
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