In two teams, with random_groups design and specialized_groups design method, the experiment tests the subjects space visual acuity and horary visual acuity.
采用随机选取和有针对性选取“散光”被试的方法，分别在两个实验组对个体的空间视敏度和时间视敏度进行测试。
Methods: The contents of serum HDL subclasses in 83 CHD subjects were determined by two dimensional gel electrophoresis associated with immunodetection method.
方法：采用双向电泳免疫印迹检测法分析了83例CHD患者血清hdl亚类组成及相对百分含量。
Method Two-dimensional echocardiographic studies on hearts of 251 healthy subjects were performed.
方法利用二维超声心动图仪对251例健康人心脏多切面检查。
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