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observation port meaning in English

观测孔
观察窗
观察孔，监视孔
观点窗

Related Words

  1. orbit observation
  2. ground observation
  3. meridian observation
  4. runway observation
  5. project observation
  6. direction observation
  7. observation place
  8. participant observation
  9. observation instrument
  10. systematic observation
  11. observation platform railing
  12. observation point
  13. observation post
  14. observation procedure
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