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Ecological footprint
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Supergene
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Atomic force microscope
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Bacillus
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Patella
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Meridian
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Abortion
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Serotonin
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Directivity
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Encephalins
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Cryptology
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Smog
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Splicing
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Chromophore
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Giant magnetoresistance
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Class
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Kliper
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Reflection microscope
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Haüy indices
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Magnesium
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General Anaesthesia
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Special relativity
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Dendritic growth
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Toxicology
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Biotic crisis
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Gasification
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Hamilton equations
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Glucagon
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Dyke
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Subterminal
Rafter
Rafters are 45 x 50 to 80 x 110 section pieces of wood, placed in the direction of the largest slope. Fixed to purlins, rafters support and distribute the weight of the roof covering. Spacing distances are commonly limited to 50 centimetres (max) but can reach 60 centimetres with thicker pieces of wood.
Rafters are used to help insulate a home by its roof structure. © Association Promo PSE
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