In the 2nd chapter , according to the requirement of the sharing and exchange of product information over the internet , the xml is determined as the knowledge description language . then the method and its architecture of the xml - based exchange with production information are presented systematically . and the relative key technology is put forward 在第二章中,針對internet環(huán)境下產(chǎn)品信息網(wǎng)上交換與共享的需求,確定了采用xml作為internet環(huán)境下產(chǎn)品信息的知識表達(dá)語言,系統(tǒng)地提出了基于xml的異構(gòu)產(chǎn)品信息網(wǎng)上交換方法及其體系結(jié)構(gòu),并在此基礎(chǔ)上論述了若干關(guān)鍵技術(shù)。