Siv rau cov xov hlau tsis tshua muaj hluav taws xob (Cu.Los yog Alu) txuas rau cov xov hlau insulated lossis ua ntej decorticating condutor (Cu,Los yog Alu.)Kab tseem ceeb: aerial Cu lossis Alu.Cov kav dej: insulated Cu lossis Alu.Lub cev insulating yog ua los ntawm lub zog siab, Huab cua thiab mechanically resistant khoom.
HOM