单词：comparison eyepiece
比较目镜
comparison eyepiece的用法和样例：
例句
- The simple negative element Barlow increases eyepiece eye-relief.简单的消极因素巴卢增加目镜眼救济。
- Looking through the eyepiece you will see two black circles.透过目镜你可以看到两个黑色的圆环。
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