The research indicated that, teachers generally neglect preconceptions of students in the concept teaching, and lack the diagnostic method and technology, also the corresponding teaching strategy.

研究表明，教师在概念教学中普遍忽视学生的前概念，缺少相关的诊断方法与技术，也缺少相应的教学策略。

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Vehicle Detection with professional diagnostic and repair equipment to enable users to enjoy the majority of most advanced maintenance technology and service concept.

设有专业车辆检测诊断及维修设备，使广大用户享受最为先进的维修技术和服务理念。

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Objective on the basis of the concept of congenital nasal sinus, the diagnostic criterion and the surgical methods of congenital nasal sinus are investigated.

目的：提出先天性鼻窦道的概念，并探讨先天性鼻窦道的诊断标准和手术修复方法。

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