1. The eyepiece of an optical instrument. 
   光学仪器的目镜
2. international comparison of tax burden 
   税收负担国际比较
3. has two converging lens system; the objective and the eyepiece. 
   有两个会聚镜头系统；物镜和目镜。
4. image is viewed through an eyepiece perpendicular to main axis. 
   通过垂直于主轴的目镜观察物体。
5. large convex lens produces image that is viewed through the eyepiece. 
   通过目镜观察物体图像的大的凸透镜。

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• 1. 比较目镜
  comparison expression || 比较式...comparison eyepiece || 比较目镜...comparison functor || 比较函子
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