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关注:1
2013-05-23 12:21
求翻译:The center thickness of the lens blank shall be specified as the thickness of the blank at its geometric center, measured normal (perpendicular) to the front and back surfaces.是什么意思? 待解决
悬赏分:1
- 离问题结束还有
The center thickness of the lens blank shall be specified as the thickness of the blank at its geometric center, measured normal (perpendicular) to the front and back surfaces.
问题补充: |
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