insulating ferrule是什么意思 insulating ferrule在线中文翻译

insulating ferrule是什么意思，insulating ferrule在线翻译，insulating ferrule中文意思，insulating ferrule的中文翻译，insulating ferrule发音，insulating ferrule例句，insulating ferrule词组短语，insulating ferrule怎么翻译，单词insulating ferrule的意思