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механический копер stresses
road.wrk.	power-driver
механический копёр
construct.	automatic ram pile-driver; hammer apparatus
el.	automatic ram pile driver
eng., obs.	monkey
mining.	hammer-apparatus; power driver (для забивки свай)
railw.	power driver

механический копер : 8 phrases in 4 subjects

Construction	1
Makarov	1
Mining	2
Technology	4