...对象或同一样本的两个部分，分别接受两种不然后按随机化方法将每个对子内的两个个体安排两种同处理；3)自身对比（self-contrast）处理，观察结果。优点：配对设计减少了个体差异。
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self contrast 自身对照
self contrast method 自身对照法
self-contrast method 自身对照方法
self-contradicting contrast 自相矛盾的对照
Performed as the self-contrast of randomized paired design.
随机化配对设计的自身对照方法。
Methods These taste losing cases caused by ACEI were collected to be tested with zinc sulfate oral solution by self-contrast method.
方法收集肾素血管紧张素导致的味觉损伤的病例，用自身对照观察口服硫酸锌溶液的作用。
By contrast, the Victorian author Samual Smiles wrote Self-Help as a catalogue of the worthy lives of engineers, industrialists and explorers.
相比之下，维多利亚时代的作家萨穆尔·斯迈尔斯则写下了《自助》一书，记录工程师、实业家和探险家们有价值的生活。
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