Electric and electronic products--Basic environmental test regulations for electricians--Test Kd:The hydrogen sulfide method at the point of contact and the connecting element是什么意思_Electric and electronic products--Basic environmental test regulations for electricians--Test Kd:The hydrogen sulfide method at the point of contact and the connecting element在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句