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гидрофобная добавка stresses
cem.	hydrophobic agent
construct.	concrete waterproof; water-proof agent
el.	hydrophobic admixture; water-repellent additive
Makarov.	water-repellent agent; water-repelling agent; waterproof; waterproofing agent; integral waterproofer (напр., в бетон)
silic.	water-repelling admixture; waterproofer
tech.	integral waterproofer (напр., в бетон)

гидрофобная добавка: 3 phrases in 2 subjects

Construction	1
Wood processing	2