The ATM adaptation layer (AAL) is defined as enhancing the services provided by the ATM layer to support the functions required by the next higher layer.是什么意思_The ATM adaptation layer (AAL) is defined as enhancing the services provided by the ATM layer to support the functions required by the next higher layer.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句