| 21. | At that time, before the appearance of plastic, porcelain was the best available insulating material.
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| 22. | Wild boar rest in shelters, which contain insulating material like spruce branches and dry hay.
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| 23. | Insulating materials within transformers and electrical equipment break down to liberate gases within the unit.
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| 24. | Polyester fiber is used as cushioning and insulating material in pillows, comforters and upholstery padding.
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| 25. | Partial discharges within an insulating material are usually initiated within gas-filled voids within the dielectric.
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| 26. | Asbestos was reportedly not used in the towers as insulating material for the steel beams.
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| 27. | In these types, a non-flammable insulating material was used.
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| 28. | Before the shutter was installed, an insulating material had blocked the view through the window.
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| 29. | Have an inspector check the furnace as well as the pipes for insulating materials containing asbestos.
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| 30. | Until the shutter was installed, the view through the window had been blocked by insulating material.
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