back vertex power造句怎么写
- 造句
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2、The central point for measuring the back vertex power is measuring the position of real focus minimum blur spot, which is the section on the orientation of image going along light axis. It has large deviation to focus position of axial ray, the value is about 76%.
1、Objective:To confirm that the lensometer adjusted by the special lenses group for contact lenses can't express the back vertex power of contact lenses.
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