Industry Ethernet and process field bus is the mainstream technology in 21 century. It is widely used nowadays.
工业以太网和过程现场总线控制技术是21世纪的主流技术，应用也将会越来越广泛。
Process field bus (PROFIBUS) is becoming a kind of internationalization and open orientation field bus nowadays.
过程现场总线(PROFIBUS)已经成为一种国际化、开放式的现场总线。
PROFIBUS is developed process field bus. It has been widely applied to wide range. It has been actually turned into international and exoteric standard of field bus .
PROFIBUS是成熟的过程现场总线，它已在很大范围内得到了广泛的应用，如今已成为国际化的开放式现场总线标准。
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