atypical characteristic的意思|示意

Objective To explore the clinical features and diagnostic procedure of atypical asthma characteristic of chest pain.

目的探讨以胸痛为主要表现的支气管哮喘（简称哮喘）的临床特点与诊断要点。

Objective to investigate the characteristics of ultrasonography of atypical ectopic pregnancy and to improve the accuracy rate of the localization and characteristic diagnostication.

目的探讨非典型异位妊娠的声像图特点，以提高超声对非典型异位妊娠定性及定位的准确率。