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solid upcurve bifocal lens meaning in Chinese

上弯形整块双焦点透镜

Related Words

  1. upcurve
  2. bifocal
  3. bifocal lens
  4. bifocal lenses
  5. bifocal segment
  6. bifocal tube
  7. bifocal ophthalmoscope
  8. bifocal slasses
  9. pantoscopic bifocal
  10. bifocal glass
  11. solid unit
  12. solid unit weight
  13. solid uranium oxide
  14. solid urethane rubber
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