... * 纵向研究longitudinal studies * 横断研究cross-sectional studies * 行动研究action research ...
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Results Among 28 included studies, 5 were Chinese literatures, 1 was RCT, and the others were cross-sectional studies.
结果共纳入28篇文献，其中中文5篇，除1篇为随机对照试验外，其余均为横断面研究。
In these studies, sectional deformation has been presented as the change of width and height of the cross-section.
在这些研究中，各段变形被描述成横截面的宽度和高度的变化。
Bacterial concentrations are higher during exacerbation than during stable disease; however, these studies are cross sectional and devoid of strain typing.
虽然疾病加重期的气道细菌浓度高于稳定期，但是，以前的研究均为横断面研究，且缺乏菌株分型。
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