一种医疗上用的诊视器，它克服了以往技术中需借助外部照明，且使用不方便等缺点。
In one kind of medical service USES the speculum, it overcame in the former technology to with the aid of the external lighting, and use not convenient and so on shortcomings.
一种医疗上用的诊视器，它克服了以往技术中需借助外部照明，且使用不方便等缺点。
In one kind of medical service USES the speculum, it overcame in the former technology to with the aid of the external lighting, and use not convenient and so on shortcomings.
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