| 21. | Most " alfajores " come packaged in aluminium foil.
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| 22. | The pilot sat in an aluminium-and-leather tub.
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| 23. | The M-94 used 25 aluminium disks on a spindle.
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| 24. | Aluminium oxide was the conventional abrasive used on hardened steel tools.
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| 25. | These can be aluminium or plastic and may have rubber edges.
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| 26. | The aircraft was made from aluminium tube, fabric and composites.
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| 27. | The rotor bars may be made either of copper or aluminium.
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| 28. | �rdalstangen serves as an important transportation hub for the aluminium industry.
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| 29. | It is a hydrated sodium and aluminium silicate with the formula.
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| 30. | The other relates to anti-dumping duties on Russian aluminium.
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