| 21. | Roughening the surface of one slat might keep them separate.
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| 22. | Each fresh mound of earth was marked by a vertical wooden slat.
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| 23. | They were worked as treadmills with miners standing on the top slats.
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| 24. | The leading-edge slats and trailing-edge flaps were adjusted.
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| 25. | The keys are made of bamboo slats mounted above a resonator box.
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| 26. | Removal of the metal slat wall cover treatment has begun.
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| 27. | Another method to gather artificial litter has been proposed by Boyan Slat.
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| 28. | Slats, in turn, are heavier and more complex than slots.
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| 29. | The pipeline was originally built of wood slats wrapped with iron hoops.
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| 30. | Another modern solution to pitch-up is the use of slats.
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