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Conveyor belt
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Sea ice - Grey
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Regional Natural Park
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Hemicordulia atrovirens
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Nematode
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Tesla
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Allosteric effector
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Secret key
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Volt
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Potato
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Larynx
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Vaginal smear
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Camouflage feathers
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European Hop hornbeam
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Van der Waals equation
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Aerosol
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Blood group
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Lunar month
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European brown bear
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Hedged farmland
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Abzyme
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Allotropy
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Nitrogen base
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Ikonos
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Structural formula
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NexGuard
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Nonlinear crystal
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Depleted uranium
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Blob
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Elementary step
Shuttering blocks
Often used in the construction of swimming pools, shuttering blocks are bottomless hollow breeze blocks. Concrete is poured into the block which reinforced with a vertical rebar in each cell. Blocks are assembled in staggered joints with two horizontal rebars embedded between the rows. They are used to create formwork.
This photo shows how the contour of the swimming pool was created with shuttering blocks. © DR
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