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Stosszahl f
tech.	coefficient of restitution
Stoßzahl f
gen.	coefficient of restitution
construct.	dynamic factor; coefficient of impact; impact factor; shock factor
phys.	collision coefficient; collision number
Stosszahl v
antenn.	collision number
astr.	collision frequency
earth.sc.	impact coefficient
Stosszähler v
meas.inst.	bump counter

Stosszahl: 5 phrases in 2 subjects

Physics	2
Радиоактивное излучение	3