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activated carbon
environ.	"aktiivihiili, tehohiili"
mater.sc., industr.	aktiivihiili
activated carbon A powdered, granular or pelleted form of amorphous carbon characterized by a very large surface area per unit volume because of an enormous number of fine pores
environ.	tehohiili

activated carbon: 4 phrases in 2 subjects

Chemistry	1
Environment	3