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二面角 èrmiànjiǎostresses
math. двугранный угол
O&G диэдр
tech. угол между двумя плоскостями; диэ́др; двухгранный угол; угол пересечения двух плоскостей
二面角
: 18 phrases in 4 subjects
General8
Geology1
Mathematics3
Technology6

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