antenna down-lead天线下引线
Down-Lead Specification引线说明
down-lead angle引下角
internal down-lead内引线
welding of down-lead引线焊接
down-lead metal core引线金属芯
mutilayer internal down-lead多层内引线
inductance of down-lead引线电感
structure design and down-lead layout结构设计与引线布局