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центр масс stresses
astronaut.	centre des masses (звёзд)
avia.	centre de masse
construct.	centre des masses
math.	centre d'inertie
mech.eng.	centre de gravité; point d'équilibre
tech.	centre attractif; centre de masses; centre des moyennes distances
центр массы
mech.eng.	centre de masse
tech.	centre de pesanteur

центр масс: 13 phrases in 6 subjects

Astronautics	3
Aviation	1
Mechanic engineering	2
Physics	5
Surveying	1
Technology	1