For the machine with two external card readers, when online communication, 2# card readershould be pulled out, and RS232 standard cable replaces it.是什么意思_For the machine with two external card readers, when online communication, 2# card readershould be pulled out, and RS232 standard cable replaces it.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句