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ringelmann number meaning in English

林格尔曼数
林格曼数

Related Words

  1. ringelmann
  2. ringelmann charts
  3. ringelmann chart
  4. ringelmann smoke chart
  5. miniature ringelmann chart
  6. ringelmann chart
  7. ringelmann charts
  8. ringelmann smoke chart
  9. ringelmen smoke chart
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