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сложный блок stresses
dril.	polyspast; pulley block; tackle
Makarov.	pulley lift; tackle block
mech.eng.	tackle purchase
mech.eng., obs.	pulley casing; pulley blocks; compound pulley
met.	pulley tackle
mil., avia.	multiple unit
mining.	pulley-block
tech.	tackle pulley

сложный блок: 5 phrases in 2 subjects

Makarov	4
Mass media	1