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Limescale
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Electroencephalograph
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Osmotic pressure
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Principle of complementarity
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Pregnancy test
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Transgenesis
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Rib
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Sun-synchronous
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Polyhaline water
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Galileo
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Natural disaster
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Pineapple
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Dryas
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Bullet cluster
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Beta-thalassaemia
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Follicle
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Ampere
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RIPE-MD
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Mechatronics
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Prime-boost
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SRS
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Bile acid chelator
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Transient Ischaemic Attack
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Interactive
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Avogadro
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Gonococcus
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Electrophile
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Yarkovsky effect
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Extracellular matrix
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Microgranular rock
pH
Hydrogen potential. pH is an index measuring the hydrogen ion activity in a solution. It is an indicator of the acidity (pH lower than 7) or alkalinity (pH higher than 7) of a solution.
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