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кольцо крепи
 кольцо крепи
mining. support ring; curb
| опускного колодца
 опускной колодец
gen. coffer
construct. foundation cylinder; limpet; sunk well
hydrogr. caisson

to phrases
кольцо крепиstresses
mining. support ring; curb
кольцо крепи: 10 phrases in 6 subjects
Astronomy1
Construction1
Drilling1
Geology1
Mining5
Technology1