Under the background of the new medical reform system, the author thinks of the national essential medicine systems in order to provide reference to improve it.

新医改出台基本药物制度，本文对新医改背景下国家基本药物制度进行思考，为完善国家基本药物制度提供借鉴。

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So, the shear performance of the bridge pier under the seismic effect is studied in this paper in order to provide theoretical basic and reference of calculation.

因此，本文研究了桥墩在地震作用下的抗剪性能和试件剪切破坏机理，为桥墩的抗剪设计提供理论依据和计算参考。

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