French ⇄ Czech English German Italian Russian Ukrainian +

en triangle stresses
gen.	в форме треугольника; треугольный
astr.	трёхугольный

en triangle : 64 phrases in 22 subjects

Armored vehicles	2
Aviation	4
Clothing	1
Electronics	11
Forestry	2
General	1
Geology	1
Geometry	1
Mechanic engineering	1
Medical appliances	2
Metallurgy	1
Military	13
Mining	2
Obsolete / dated	2
Physics	1
Polygraphy	1
Radiation	2
Radio	2
Rail transport	1
Technology	9
Transformers	2
World war II	2