By using appropriate method on the electrical wiring of circuit connecting parts, to show the electrical conductor on insulating material. It normally means the circuit board without parts on it.是什么意思_By using appropriate method on the electrical wiring of circuit connecting parts, to show the electrical conductor on insulating material. It normally means the circuit board without parts on it.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句