through hole connection meaning in English

通孔连接

Sectional specification for capability approval of manufacturers of double - sided flexible printed wiring boards of assessed quality with through hole connections and with or without rigidizing component materials
经质量评定的带穿透镀膜孔连接的带或不带硬化成分材料的双面挠性印制电路板制造商性能鉴定用分规范
Sectional specification for capability approval of manufacturers of single - or double - sided flexible printed wiring boards of assessed quality without through hole connections and with or without rigidizing component materials
经质量评定的无穿透镀膜孔连接的带或不带硬化成份材料的单面或双面挠性印制电路板制造商性能鉴定用分规范