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двугранный adj.stresses
crystall. bisémarginé
geol. dièdre; bisémarginé (мин, крист)
math. diédrique
двугранный: 30 phrases in 10 subjects
Astronautics1
General1
Geology1
Geometry1
Mathematics18
Mechanic engineering2
Metallurgy1
Radio2
Surveying2
Technology1