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gen. hard-rock
construct. whinstone
el. greenheart
forestr. hard-wooded species
geol. firm ground; hard formation
hydrol. massive rock; solid rock
mining., oil hard rock
O&G hard robbing
O&G, geol. bastard rock
O&G, sahk.r. hard formation (категория буримости); hard rock (категория буримости)
oil Rk; rk rock
railw. sound rock; cankstone; cank
road.wrk. rock; burr
seism. solid bed
tech. competent rock
geol. solid beds
oil hard rocks
mil., tech. hard formation
твёрдая порода: 156 phrases in 33 subjects
Agrochemistry1
British usage, not spelling1
Cement2
Construction14
Diplomacy1
Drilling5
Electronics1
Energy industry1
Firefighting and fire-control systems1
Forestry2
General4
Geology20
Geophysics1
Makarov7
Metallurgy1
Military1
Mining9
Nautical2
Navigation3
Oil / petroleum23
Oil and gas11
Oil and gas technology4
Oilfields6
Packaging2
Polygraphy1
Rail transport3
Road works2
Sakhalin2
Sakhalin R1
Seismology1
Technology10
Textile industry1
Wood processing12