core winding meaning in Chinese

芯绕组
芯轴缠绕

Air - core winding
无芯线圈
Sectional specification : fixed inductors with ceramic or ferrite core wound with copper wire for hf circuits ; german version en 129200 : 1994
分规范. hf电路用带陶瓷或铁心的线绕线圈
Harmonized system of quality assessment for electronic components - sectional specification : fixed inductors with ceramic or ferrite core wound with copper wire for rf circuits
电子元器件质量评定协调体系.分规范.射频电路用带陶瓷或铁心的铜导线线绕固定电感器