1、 The dangerous type chronic otitis media occurs with pars flaccida and marginal perforations.
慢性中耳炎的危险型可出现鼓膜松弛部的穿孔和鼓膜边缘性穿孔。
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2、 The aims of this project were to evaluate the acute segmental fixation afforded by fixation techniques: intralaminar, pars, and pedicle.
本研究的目的是评估固定技术如椎板内、狭部和椎弓根的即时节段间固定效果。
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