OBJECTIVE: To discuss problems concerning the current sampling test of drugs in China.
前言：目的讨论我国现行药品抽样检验中存在的问题。
Objective: To explore the sampling method of telephone survey.
目的：探讨电话访问的抽样方法。
Objective the aim of this study was to compare the differences in sampling methods of ct perfusion for soft tissue neoplasms in the head and neck regions.
目的研究不同ct灌注采样方法对头颈部软组织肿块性病变评价的影响。
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