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echelon lens meaning in English

【光学】阶梯透镜。

Related Words

  1. echelon
  2. forward echelon
  3. echelon grating
  4. echelon fire
  5. lens
  6. progressive lens
  7. lens turret
  8. convergent lens
  9. lens louse
  10. contact lens
  11. echelon l
  12. echelon left
  13. echelon lens antenna
  14. echelon like veins
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