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o
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Forvo
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+
annular core
chem.
Ringkern
m
hi.energ.
Ringkem
m
(e.g. of a coil)
;
ringförmiger Kern
(e.g. of a coil)
;
Toroid
n
(e.g. of a coil)
;
Toroidkern
m
(e.g. of a coil)
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