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rdzeń m
gen.	核心
el.mach.	磁铁心; 磁心
rdzeń izolatora kompozytowego m
isol.	芯体 绝缘子的

rdzeń: 14 phrases in 5 subjects

Cables and cable production	2
Electric machinery	6
Environment	1
Nuclear physics	4
Superconductivity	1