目的探讨变焦放大胃镜在诊断和发现胃黏膜糜烂性病变中的作用。
Objective To investigate the function of the new magnifying endoscopy in the diagnosis of gastric mucosal erosion in the stomach.
数码变焦是不同的，指的是数码放大图像。
Digital zoom is different, and refers to the digital magnification of an image.
不同于普通的数码变焦，但没有达到退化图像放大。
Unlike the regular digital zoom, it achieves zooming without image degradation.
重要的是要注意：数字变焦的运作是通过剪裁出你正在拍摄的影像的中间部位，并进行数字放大。
It's important to note that digital zoom works by cropping out the central portion of the image that you are taking and blowing it up3digitally.
需要一种可以改变放大率的小型快速光学变焦装置。
There is a need for a small and fast optical zoom device that can change magnification.
需要一种可以改变放大率的小型快速光学变焦装置。
There is a need for a small and fast optical zoom device that can change magnification.
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