Defines the requirements for an equipment to measure bit-error performance at 64 kbit/s and N X 64 kbit/s.是什么意思_Defines the requirements for an equipment to measure bit-error performance at 64 kbit/s and N X 64 kbit/s.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句