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petzval sum meaning in Chinese

珀兹伐和

Related Words

  1. petzval condition
  2. petzval surface
  3. petzval lens
  4. petzval type objective
  5. petzval protrait objective
  6. petzval curvature of field
  7. summing
  8. sum test
  9. statistical sum
  10. summed ablation
  11. petzval lens
  12. petzval protrait objective
  13. petzval surface
  14. petzval type objective
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